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Review

Investigating Osteomyelitis as a Rare Adverse Effect of Vaccination in the Pediatric Population

by
Valeria Garbo
1,
Laura Venuti
1,*,
Chiara Albano
1,
Costanza Caruana
1,
Alessandra Cuccia
1,
Anna Condemi
1,
Giovanni Boncori
1,
Valentina Frasca Polara
2,
Antonio Cascio
3,
Sergio Salerno
4 and
Claudia Colomba
1,2
1
Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties “G D’Alessandro”, University of Palermo, 90127 Palermo, Italy
2
Division of Paediatric Infectious Disease, “G. Di Cristina” Hospital, ARNAS Civico Di Cristina Benfratelli, 90127 Palermo, Italy
3
Infectious and Tropical Disease Unit, Sicilian Regional Reference Center for the Fight Against AIDS, AOU Policlinico “P. Giaccone”, 90127 Palermo, Italy
4
Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, 90127 Palermo, Italy
*
Author to whom correspondence should be addressed.
Pathogens 2024, 13(11), 972; https://doi.org/10.3390/pathogens13110972
Submission received: 7 August 2024 / Revised: 31 October 2024 / Accepted: 6 November 2024 / Published: 7 November 2024

Abstract

:
Immunization is a preventive measure of crucial importance. As with any other medication, side effects are a possibility and include the rare occurrence of severe infections, such as osteomyelitis. We report an unusual case of pediatric osteomyelitis following vaccination and provide a review of similar reports submitted to the Vaccine Adverse Event Report System (VAERS), aiming to explore the association between the vaccination procedure and the occurrence of osteomyelitis in childhood. A previously healthy infant, with no history of trauma or infection, presented with hyperpyrexia, swelling, and functional impairment in the left leg and was eventually diagnosed with osteomyelitis of the left femur. An edema was noted at the site of the injection that he received days before for immunization purposes. The infection required surgical drainage and a four-week-long intravenous antibiotic treatment, and the patient was discharged upon showing improved clinical conditions. Forty-seven reports of similar cases submitted to VAERS between 1994 and 2023 were collected, and several cases from the literature, including a case of femoral osteomyelitis in a newborn vaccinated against Hepatitis B, attributed to improper injection technique. Another case was reported in a 15-year-old girl, which aligned with six similar cases of osteomyelitis in adolescents following HPV vaccines collected from VAERS. Despite the small sample number, the findings that in 77% of cases the infection was localized in the vaccinated limb and that symptoms appeared on average 4.3 days (IQR 1.0–5.7 days) post-vaccination suggest a possible link to the injection procedure and highlight the need to adhere to recommendations regarding skin preparation and the selection of the appropriate needle length and injection site.

1. Background

Vaccinations are the most effective and safe intervention for preventing major infectious diseases and represent an essential component of global public health programs. Over the last millennium, they have contributed to eradicating or reducing the burden of many diseases, saving more human lives than any other medical procedure in history [1].
The surveillance of adverse effects following immunization is mandatory. In Italy, data are collected by a national pharmacovigilance network known as “Rete Nazionale di Farmacovigilanza (RNF)”, which includes the Italian Medicine Agency (Agenzia Italiana del Farmaco, AIFA), the 20 regions and the autonomous provinces of Trento and Bolzano, 204 local health authorities, 112 hospitals, 38 research institutes, and 561 pharmaceutical companies [2,3].
The most common side effects of vaccination are warmth, swelling, pain at the injection site, fever, headache, and fatigue [4]. Allergic reactions can also occur; therefore, a 15–30 min long observation period is recommended post-procedure [4,5]. Bacterial infections following vaccination, however rare, have been occasionally reported and include cellulitis [6,7], abscesses [8,9,10,11], septic arthritis [12,13,14,15], bacteremia [16], and osteomyelitis [17,18,19]. In the United States, between 1991 and 2001, more than 1.9 billion doses of vaccines were distributed and 128,717 adverse events were reported to the Vaccine Adverse Event Report System (VAERS) [20]. Of these, 2148 (1.7%) were reports of cellulitis and 426 (0.3%) were reports of abscesses at the injection site [20].
Common responsible agents for these infections are Gram-positive cocci, especially Staphylococcus aureus (S. aureus), an opportunistic commensal residing in the nostrils, oropharynx, and skin of healthy individuals [21]. S. aureus can cause a broad spectrum of conditions, including skin and soft tissue infections, osteomyelitis, pneumonia, bacteremia, endocarditis, sepsis, and toxic shock syndrome (TSS) [22].
We describe a case of osteomyelitis in a previously healthy infant, likely caused by the direct inoculation of the microorganism occurring during the vaccination procedure and provide a review of pediatric cases of osteomyelitis following vaccination collected from VAERS, with the objective of exploring the association between the vaccination procedure and the occurrence of osteomyelitis in childhood.

2. Case Report

A 3-month-old previously healthy infant was admitted to our pediatric infectious disease department in November 2023 because of swelling at the site of injection in the left lower limb, functional impairment, and hyperpyrexia. He had been immunized against meningococcus B and rotavirus about 12 days before admission.
The patient’s parents did not report any prior medical conditions, and the infant exhibited good adaptation to extrauterine life and regular growth. The following findings were noted upon physical examination: SpO2, 98% in room air; heart rate, 170 bpm; respiratory rate, 35 breaths/min; and temperature, 38.5 °C. The left lower limb appeared externally rotated and flexed. The supra-patellar and thigh regions were edematous, with taut, warm, and tender skin (Figure 1).
Upon admission, antibiotic therapy was initiated with daptomycin 10 mg/kg/day and meropenem at the dosage of 60 mg/kg/day, divided into three administrations. The outcomes of haemato-chemical exams performed at various times during recovery are detailed in Table 1, and an ultrasound showed a voluminous collection in the proximity of the left-femoral region measuring 39 × 40 mm, with elevation.
A CT scan performed on the second day of hospitalization evidenced a large, encapsulated abscess collection, 9 × 4 cm in size, surrounding the distal metaphyseal femoral bone and extending to the joint. The cortical erosion of the metaphyseal distal bone, which appeared frayed, and irregularities in the ossification core were observed (Figure 2).
The surgical drainage of the abscess collection was performed, and a suction drain was placed in the left thigh. A cultural exam of the drained fluid revealed the presence of methicillin-sensitive S. aureus (MSSA). Therefore, antibiotic therapy was modified to cefazolin 150 mg/kg/day in three administrations for 34 days and rifampicin 10 mg/kg/day in two administrations for 32 days.
Fifteen days after the start of specific antibiotic therapy, an MRI was performed and showed a size reduction in the peripheral collection at the left-femoral diaphysis and the distal meta-epiphyseal region (Figure 3).
The maximum thickness was approximately 9 mm in the anterior distal location, compared to the previous 16 mm.
During hospitalization, a gradual yet progressive improvement in the patient’s clinical condition was observed, with the resolution of fever and the normalization of inflammatory markers (Table 1). Signs and symptoms, including pain, improved steadily, and the active and passive mobilization of the left lower limb resumed. Three weeks after admission, the child contracted influenza A.
Four weeks of intravenous antibiotic treatment were completed, and the patient was discharged in good clinical condition after receiving a single dose of dalbavancin at the dosage of 22.5 mg/kg. Three weeks after discharge, an outpatient re-evaluation and a total body PET scan were performed, and a modest radiotracer uptake, possibly a consequence of the inflammatory process, was noted in the distal part of the left femur. Despite the steady recovery, a discrepancy in limb length was reported at follow-up.

3. Methodology

We searched VAERS in December 2023 for reports of osteomyelitis in children (ages 0 to 17 years) vaccinated between 1990 and 2023. The following manifestations were selected, with the corresponding codes: osteomyelitis (10031252); osteomyelitis acute (10031253); osteomyelitis bacterial (10065237); osteomyelitis chronic (10031256); and staphylococcal osteomyelitis (10064250) [23].
We included all cases where a diagnosis of osteomyelitis in childhood was clearly reported and followed a vaccination administered subcutaneously or intramuscularly.
Information gathered by VAERS is subject to reporting biases, inaccuracy, and incompleteness. Reports can be submitted by the public at large, and the numerosity of reports of events following vaccinations is not sufficient to infer causation. To counter these limitations, we excluded layperson reports, reports where data were insufficient to determine a diagnosis of osteomyelitis, and cases where a correlation between the vaccination procedure and osteomyelitis was not plausible, for instance, because of the vaccination route, the timing of symptom onset, or the occurrence of a trauma that better explained the infection. Data collected from this resource should be interpreted within the context of the existing literature.

4. Results

The search returned 113 total events. Sixty-six were excluded for various reasons. In 32 cases, a diagnosis of osteomyelitis was not confirmed; in 11 cases, osteomyelitis was related to the Bacillus of Calmette–Guérin (BCG) vaccine; 17 cases were excluded because a correlation with the vaccination procedure was unlikely due to the vaccination route (i.e., oral vaccines), the identified pathogens (Pneumococcus in ten cases, Mycobacterium Avium Complex in one case, and Hemophilus in one case) or the timing of symptom onset; and 6 reports were excluded because they were duplicates or not submitted by health professionals. A total of 47 cases of pediatric osteomyelitis following vaccination were selected (detailed in Table 2).
Twenty-four were female (52%). The mean age was approximately 4.7 years, with an interquartile range (IQR) between 0.85 and 10.5, and the median age was 2 years. Three were newborns (6%), 66% were up to 4 years old (n = 31), 6% were between 5 and 9 years old (n = 3), and 28% were between 10 and 17 years old (n = 13).
In 77% of the cases where this information was available, osteomyelitis affected the same limb into which the vaccine was injected. The time elapsed between vaccination and symptom onset was reported in all cases but five. The mean time to onset was 4.3 days (IQR, 1.0–5.7; range, between 0 and 23 days). The median time to onset was 2 days. In 86% of cases where the time to onset was known (n = 36), symptoms manifested within a week. Only in 7% of cases (n = 3) did more than 15 days pass before the onset of clinical manifestations (19, 20, and 23 days).
Ultrasound findings included soft-tissue edema and fluid collections near the infection site or underneath the periosteum. X-ray findings included new bone formation, alterations in bone density, and pathological fractures. MRI was the most frequently reported imaging technique, and findings included subperiosteal or soft-tissue fluid collections (indicative of abscesses or phlegmons), soft-tissue edema and the involvement of muscles and joints (myositis or arthritis), and periosteal reaction or elevation. In four instances, scintigraphy findings of hypercaptation indicative of increased metabolic activity were reported.
In 56% of cases (13 out of 23) where an etiological diagnosis was reported, S. aureus species were isolated, either from a wound or blood sample. In two cases, Group A Streptococcus pyogenes was isolated from the blood; in one case, Citrobacter freundii; in another case, it was unspecified “Gram-positive cocci”; and in another case, S. capitis, S. epidermidis, and Pseudomonas aeruginosa were isolated together with S. aureus. In six cases, cultures were negative. Blood samples were used for cultures in all cases but one, in which a wound sample was used.
Information on antibiotic sensitivity was reported only in seven of these cases: in four, MRSA was isolated, and in three, MSSA was isolated.
Treatment included antibiotics and the incision and drainage of abscesses.
In several cases, reports included information on long-term sequelae, such as permanent disability, persistent unstable gait, limb length discrepancy, bone deformities, and impaired bone growth.
The outcome was positive in 25 cases out of 30 where information on recovery was available. In the remaining five cases, the children had not yet recovered at the time that the report was submitted.

5. Discussion

Vaccines are crucial in the prevention of infectious diseases and have saved millions of lives over the course of the last century [1]. Immunization side effects are infrequent and are mild in most cases [24]. Although rare, infections following intramuscular or subcutaneous injections, including vaccines, can occur due to the direct inoculation of skin flora bacteria. Skin bacteria that might enter the body through injection are nearly always non-pathogenic [25,26]; however, the possibility of severe infections, especially in children and immunocompromised individuals, warrants consideration, as it can inform preventive measures.
A literature search revealed that a case of femoral osteomyelitis occurred in a newborn with no known infective risk factors one day after Hepatitis B vaccination [18]. The authors attributed the infection to inadequate site preparation and excessive depth of needle insertion [18]. About a decade later, a case of osteomyelitis localized in the arm was reported in a 15-year-old girl following HPV vaccination [17]. In this case, the infection was linked to the overpenetration of the needle during injection [17]. Reports of six similar cases of osteomyelitis in adolescents (five girls and one boy) following HPV vaccination were gathered from VAERS (Table 2). Most recently, a case of osteomyelitis caused by C. freundii following immunization with the Moderna COVID-19 vaccine was reported [19]. The patient, a 15-year-old boy, also developed deep vein thrombosis (DVT), a pulmonary embolism, and acute respiratory distress syndrome. The authors noted that both the vaccine itself and the bone infection could explain the thrombotic event [19].
Of the cases collected in this review, the median time to the onset of symptoms (such as fever, pain, and functional impairment) was 2 days, and in most cases (77%), the infection affected the same limb into which the vaccine was injected. Similarly, in the case report, the affected limb was the same as that of vaccination, and signs and symptoms manifested within two weeks, indicating a possible link to the injection procedure.
According to the World Health Organization (WHO), a safe injection is one that does not cause harm to the recipient, does not produce dangerous waste, and does not put the provider at risk [27]. Unsafe injections can cause viral, bacterial, or fungal infections, and recommended safety practices include hand hygiene, using gloves when appropriate or other single-use protective materials, and skin preparation through disinfection [27].
The recommended skin disinfection procedure, while varying based on the type of injection, generally consists of the use of a swab soaked with a 60–70% alcohol solution to wipe the injection site area from the center outwards [27]. The solution should be applied for 30 s, and the site should be allowed to dry for an additional 30 s [27]. Of note, according to WHO recommendations, skin preparation for vaccines should be performed with soap and water rather than with alcohol solutions [27]. According to the CDC general best practice guidelines for immunization, health practitioners administering vaccines should follow general precautions to lower the risk of infections, such as hand cleansing with an alcohol-based antiseptic or hand washing with soap and water before the procedure [28].
A review conducted by the Canadian Agency for Drugs and Technologies in Health concluded that the question of whether skin disinfection prior to injections should be performed is difficult to answer [29]. However, the criteria for inclusion in this review were met by only one randomized controlled trial (RCT) [30], where no statistically significant difference was found in infection incidence between the group of children where swabbing at the injection site was performed prior to vaccination and the control group, where alcohol swabbing was performed adjacent to the vaccination site. However, the RCT did not have sufficient statistical power to accurately assess its main outcome, skin infection, as there were no cases of pus leaking from the injection site, cellulitis, or abscesses. Additional RCTs, with a broadened focus on various types of injections, would be needed to assess the effectiveness of skin disinfection [29,30].
Several authors have questioned the utility and necessity of skin disinfection prior to injections over time, highlighting limitations in related studies, such as small sample sizes and recall bias [31,32,33,34]. A recent review on the importance of skin disinfection prior to vaccination found that only 421 out of 1534 infectious events following injections (27.4%) were due to exogenous contamination, demonstrating the role of endogenous contamination as an infective source during vaccination [35].
The Advisory Committee on Immunization Practices (ACIP) specifies that vaccines should be injected into areas where tissue injury at the neural, vascular, or cutaneous level is unlikely. Furthermore, needle length should be established based on the age and body mass of the patient, in order to reach the muscle mass while leaving nerves, blood vessels, and bone untouched [36,37,38,39]. For newborns, a 5/8” needle (22–25 gauge) is indicated, while for infants, (1–12 months) a 1” needle (22–25 gauge) is recommended [40,41]. The recommended injection site is the anterolateral thigh muscle [40,41]. Regarding the reported case, we lack details on the thoroughness of disinfection, penetration depth, or needle length used. However, inflammatory manifestations at the injection site, in the absence of a history of trauma or other infection sources, and the temporal correlation support the possibility of causality in this case.
Children are more vulnerable to osteomyelitis due to their highly vascularized, developing skeletal system combined with an immature immune system, and they face a higher risk of sequelae such as bone asymmetry and gait disturbances. In the reported case, a previously healthy child with no risk factors developed limb asymmetry due to femoral osteomyelitis following a simple preventive procedure.
Osteomyelitis is an inflammatory process with accompanied bone destruction, with long bones (like the femur and tibia) being the most commonly affected sites in pediatric age [42]. The infection can spread to the adjacent joint space in areas where the metaphysis is intracapsular, such as the proximal ends of the femur, humerus, and tibia. Bone infection can develop due to the hematogenous dissemination, contiguous spread, or direct inoculation of bacteria [43], and, in children, it typically follows trauma, which acts as an infective source leading to bacteremia and bone infection [42]. In our case, we hypothesize that the infection was caused by either direct inoculation in the bone tissue due to excessive needle penetration or the hematogenous dissemination of cutaneous bacteria.
The pathogen most commonly responsible for osteomyelitis is S. aureus, a frequent colonizer of human skin and mucous membranes [44,45], which was responsible for most of the cases of osteomyelitis that we reviewed with a known etiological diagnosis. In our case report, MSSA was isolated from drained fluid. S. aureus possesses surface receptors known as MSCRAMMs, microbial surface components that bind to adhesive matrix molecules, mediating its adhesion to bone matrix components [42,46]. Once attached to the bone tissue, S. aureus survives in the intracellular space favored by its metabolically quiescent phenotype [47], which makes its eradication through antibiotics challenging.
Other bacteria responsible for pediatric osteomyelitis are S. pyogenes, S. pneumoniae, Salmonella, H. influenzae, and K. kingae [43,44]. Among the reviewed cases, other isolated pathogens besides S. aureus included S. pyogenes, S. capitis, S. epidermidis, and P. aeruginosa. These microorganisms can be part of the skin flora, reinforcing a possible causal link with the injection procedure.
Acute osteomyelitis is more common in children, particularly under 16, than adults [48,49,50]. In children, the rich vascularization and the stagnant blood in venous sinusoids, especially at the distal ends of long-bone metaphyses, can favor the establishment of microorganisms when bacteremia occurs [51]. Bone microtrauma can also favor infection, as it affects local blood supply and causes the exposure of host matrix proteins to which bacteria can adhere.
The treatment of acute osteomyelitis in children includes an antibiotic course over 4–6 weeks [52], pain medications, and sometimes surgical procedures. In our case, empirical intravenous treatment was started and later rationalized based on the cultural exam.
Regarding the minimum duration of oral treatment, the current data are insufficient to establish a clear recommendation. We decided on a long-course intravenous treatment given the young age of the patient and the severity of the clinical picture. We opted for a 4-week treatment followed by one dose of dalbavancin, instead of a 6-week-long treatment, to reduce the length of hospitalization and its associated risks. The use of dalbavancin, approved in the pediatric population to treat acute bacterial skin and skin structure infections (ABSSSIs), has the advantage of single-dose administration, with subsequent pain reduction and early discharge, minimizing the risk of nosocomial infections and hospitalization costs [53].
In conclusion, the necessity of skin preparation prior to injection is debated, and more blinded RCTs would be necessary to remove doubts on this matter. However, to minimize the risks, costs, and potentially severe sequelae of infections related to the immunization procedure, it is important to adhere to appropriate healthcare practices concerning vaccinations. This includes the use of single-use materials, the selection of the correct needle length and site, and proper skin preparation.

Author Contributions

Conceptualization, C.C. (Claudia Colomba), V.G. and L.V.; methodology, C.C. (Claudia Colomba), V.G. and L.V.; validation, C.C. (Claudia Colomba), A.C. (Antonio Cascio) and V.G.; formal analysis, C.C. (Claudia Colomba), V.G. and L.V.; investigation, V.G., L.V., C.C. (Costanza Caruana), A.C. (Anna Condemi), A.C. (Alessandra Cuccia), C.A., G.B. and V.F.P.; data curation, V.G., L.V., C.C. (Costanza Caruana), A.C. (Alessandra Cuccia), A.C. (Anna Condemi), and G.B.; writing—original draft preparation, V.G., L.V., C.C. (Costanza Caruana), A.C. (Alessandra Cuccia), and C.A.; writing—review and editing, V.G., L.V. and C.C. (Claudia Colomba); visualization, S.S. and V.F.P.; supervision, C.C. (Claudia Colomba), A.C. (Antonio Cascio), and S.S. All authors have read and agreed to the published version of the manuscript.

Funding

This research received no external funding.

Institutional Review Board Statement

Ethical review and approval were waived for this study because it involves a review of secondary data from the VAERS (Vaccine Adverse Event Reporting System) database, which is publicly available and contains only anonymous information.

Informed Consent Statement

Signed informed consent for publication was obtained from the child’s father.

Data Availability Statement

All relevant data are included in the article.

Conflicts of Interest

The authors declare that there are no conflicts of interest regarding the publication of this paper.

Abbreviations

ABAntibiotics
ABSSSIAcute bacterial skin and skin structure infections
ACIPAdvisory Committee on Immunization Practices
AIFAAgenzia Italiana del Farmaco (Italian Medicine Agency)
ARDSAcute respiratory distress syndrome
CDCCenters for Disease Control and Prevention
CTComputed tomography
DTaPDiphtheria, Tetanus, and Pertussis Vaccine
DT-IPVDiphtheria and Tetanus Toxoids and Inactivated Poliovirus Vaccine
DVTDeep vein thrombosis
Hep BHepatitis B vaccine
HibHaemophilus influenzae type b vaccine
HPVHuman papillomavirus vaccine
IPVInactivated poliovirus vaccine
LALeft arm
LLLeft leg
MMRMeasles, Mumps, and Rubella Vaccine
MOMouth (in the context of vaccine administration)
MPRMulti-planar reconstruction
MRSAMethicillin-resistant Staphylococcus aureus
MRIMagnetic resonance imaging
MSSAMethicillin-sensitive Staphylococcus aureus
NRNot reported
PneumoPneumococcal vaccine
RARight arm
RCTRandomized controlled trial
RLRight leg
RNFRete Nazionale di Farmacovigilanza (National Pharmacovigilance Network)
ROMRange of motion
STIRShort tau inversion recovery
Tdap (Adacel, Boostrix)Tetanus, Diphtheria, and Pertussis Vaccine (specific brands)
USUltrasound
VAERSVaccine Adverse Event Reporting System
WHOWorld Health Organization
XRX-ray

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Figure 1. Edematous left lower limb with tense skin in a 3-month-old infant affected by osteomyelitis and soft tissue infection.
Figure 1. Edematous left lower limb with tense skin in a 3-month-old infant affected by osteomyelitis and soft tissue infection.
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Figure 2. Contrast-enhanced computed tomography (CT) scan of the left leg (a) sagittal multi-planar (MPR) reconstruction: left fluid collection surrounding the distal metaphyseal femoral bone (white arrow) extending to the joint with the cortical erosion/destruction of the metaphyseal distal bone (black arrow); (b) axial MPR reconstruction: left fluid collection surrounding the distal metaphyseal femur (red arrow); (c) volume rendering CT reconstruction bone window demonstrating distal metaphyseal bone erosion (arrow).
Figure 2. Contrast-enhanced computed tomography (CT) scan of the left leg (a) sagittal multi-planar (MPR) reconstruction: left fluid collection surrounding the distal metaphyseal femoral bone (white arrow) extending to the joint with the cortical erosion/destruction of the metaphyseal distal bone (black arrow); (b) axial MPR reconstruction: left fluid collection surrounding the distal metaphyseal femur (red arrow); (c) volume rendering CT reconstruction bone window demonstrating distal metaphyseal bone erosion (arrow).
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Figure 3. Magnetic resonance (MR) short tau inversion recovery (STIR) of the left-lower-limb coronal (a) and axial (b) planes, demonstrating the large distal metaphyseal collection (arrow) expanding in the vastus lateralis muscle with an inhomogeneous signal from the distal femoral bone.
Figure 3. Magnetic resonance (MR) short tau inversion recovery (STIR) of the left-lower-limb coronal (a) and axial (b) planes, demonstrating the large distal metaphyseal collection (arrow) expanding in the vastus lateralis muscle with an inhomogeneous signal from the distal femoral bone.
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Table 1. Results of the haemato-chemical laboratory tests performed at different times during the hospital stay.
Table 1. Results of the haemato-chemical laboratory tests performed at different times during the hospital stay.
VariableUpon AdmissionDuring Hospitalization *Upon DischargeReference Ranges
White blood cells (U/L)24.52010.6804.0207.90–13.40
Neutrophils65.4%10.6%6.1%17.0–55.5
Lymphocytes24.6%64.6%75.2%16.0–68.0
Monocytes8.9%9.2%15.1%4.0–11.0
Platelets (U/L)603.300335.400133.100215.0–448.0
PCR mg/dL26.061.400.170.00–0.50
PCT μg/L0.400.040.04<0.5
* Roughly one month after admission.
Table 2. Summary of the reports included, collected from VAERS.
Table 2. Summary of the reports included, collected from VAERS.
Sex/AgeYear Vaccinated *Vaccine and SiteDays to OnsetClinical Picture and DiagnosisImaging Investigation ReportsIdentified Pathogens and Culture ResultsReported TreatmentsRecovered at the Time of Report Submission †
M/152023 *COVID-19/RA
MODERNA
3Pain, locally increased temperature, and pitting edema in the right leg extending up to the right thigh; “gray-blackish discoloration” of the affected leg; difficulty walking. Chronic osteomyelitis of the right tibia complicated by fistulization and septic arthritis in the right knee and ankle. Additional events including DVT, pulmonary embolism, ARDS, and pneumothoraxUS of the leg showed DVTCitrobacter freundii (culture of a sample from the wound)Piperacillin/tazobactam, linezolid and clindamycin.
Emergency debridement and decompression; arthrotomy, proximal tibial corticectomy, long leg casting and external fixation
No
M/122021COVID-19/LA
PFIZER-BIONTECH
2Right-tibial osteomyelitisSignal abnormality throughout the shaft of the tibia compatible with osteomyelitis; circumferential subperiosteal fluid resembling subperiosteal phlegmon or abscess;
small osteochondral defect of the talus (MRI)
NRUnspecified ABNR
F/122021COVID-19/LA
PFIZER-BIONTECH
0Fever, pain in the left buttocks and exertional pain in the left lower limb. Osteomyelitis of the left ilium, left-sacroiliac arthritisMRI findings supported the diagnosis of osteomyelitis of the left ilium, left-sacroiliac arthritisNegative blood culture (twice)Cefazolin (IV, then oral)NR
F/152020 *HPV/LA
(GARDASIL)
0Severe pain in her arm and tingling in her fingers seconds after receiving the injection; the pain persisted and led to a diagnosis of frozen shoulder; persisting tenderness, swelling, and limited ROM. Acute osteomyelitis of the humerusOsteomyelitis of the left proximal humeral metaphysis with periosteal elevation, adjacent phlegmon, myofascitis of the deltoid and triceps (MRI).
Periosteal bone formation along the left proximal humeral metadiaphysis, with adjacent stippled density (heterotrophic bone formation) (XR)
Negative wound sample culturesCefazolin; cephalexin (oral).
Incision and drainage of the abscess
Yes
M/0.082020HEPATITIS B/LL
(RECOMBIVAX HB)
1Decreased movement and tenderness in the left leg. Osteomyelitis of the left tibiaOsteomyelitis of left tibia (MRI)Negative blood cultureCeftriaxone and clindamycinYes
F/52020INFLUENZA/NR
(QUADRIVAL A-B);
PNEUMO/NR
(PNEUMOVAX -23V)
1Injection-site pain, fever, and shoulder pain.
Cellulitis, osteomyelitis
Marked soft-tissue edema underlying the injection site, involving musculature, and extending to the bone near the deltoid tuberosity; periosteal thickening; and subperiosteal collection (US)NRNRYes
F/22019HEP A/RL
(HAVRIX)
1Lower extremity swelling and fever. Admitted for DVT, the patient was diagnosed with MRSA bacteremia, osteomyelitis, and abscessesNRMRSA (blood culture)Unspecified IV ABYes
M/1.332019HEP A/RL.
(HAVRIX);
INFLUENZA/LL
(FLULAVAL QUADRIVALENT);
(MMR II)/LL;
VARICELLA/RL
(VARIVAX)
1Pain when bearing weight on the right leg and difficulty walking, fever.
Myositis, osteomyelitis, and a soft-tissue abscess in the right thigh
T2 hyperintense and diffusion restriction in the muscles, indicating myositis, and the femur, indicating osteomyelitis.
A rim-enhancing fluid collection identified as a soft-tissue abscess (MRI)
NRUnspecified ABNR
F/1.332018MEASLES + MUMPS + RUBELLA + VARICELLA/NR
(PROQUAD)
20Fever; significant claudication and difficulty bearing weight on the right leg.
Right distal femur osteomyelitis
Increased uptake in the right distal femur (Scintigraphy)Group A streptococcus pyogenes (blood culture)Ceftriaxone IV; Cefadroxil; CephalexinYes
F/12018MEASLES + MUMPS + RUBELLA + VARICELLA/LA
(PROQUAD)
7Swelling and tenderness to touch in the left arm, mainly in the wrist; fever; refusal to use the left arm.
Clinical diagnosis of synovial arthritis and osteomyelitis
Irregularity of cortex in left distal arm, suspicion of small fracture (XR).
Increased uptake in the wrist on either side of the joint, more prominent in the growth plate of the distal left forearm (Scintigraphy)
NRCefuroxime; cefazolin; cephalexinNR
M/0.172018POLIO VIRUS, INACT./NR
(unknown brand name and manufacturer)
1Fever, vaccination site swelling and induration.
Sepsis; right-proximal-tibia osteomyelitis; right-shoulder suppurative arthritis
NRNRNRYes
F/12017HIB/LL
(PEDVAXHIB);
PNEUMO/LL
(PREVNAR13);
HEP A/RL
(HAVRIX);
MEASLES + MUMPS + RUBELLA + VARICELLA/RL
(PROQUAD)
NROsteomyelitis with subperiosteal abscess in the right distal thighNRMRSA (blood culture and abscess sample culture)NRNR
M/0.32016 *HIB/NR
(PEDVAXHIB);
POLIO VIRUS, INACT./NR
(IPOL)
NRFever, pain, “myositis of left lower thigh and mild periosteal reaction of left mid distal femur.”“Myositis of left lower thigh and mild periosteal reaction of left mid distal femur” (MRI)NRNRNR
F/42016 *DTAP/RL
(INFANRIX);
VARICELLA/RL
(VARIVAX)
NRFever and pain in the right leg.
Osteomyelitis
NRStaphylococcus (surgical sample culture)Surgical drainage of bone infectious focusNR
M/22016 *HIB/NR;
PNEUMO/NR
(unknown brand name and manufacturer)
NRHistory of chronic granulomatous disease; osteomyelitisNRNRNRNR
M/0.32016DTP + IPV/RA
(unknown brand name and manufacturer);
HIB/LA
(ACTHIB);
HEP B/RA
(unknown brand name);
PNEUMO/NR
(PREVNAR13);
ROTAVIRUS/MO
(ROTARIX)
6Fever, cellulitis of the right upper arm, myositis, and osteomyelitis of the right radiusOsteomyelitis of the right radius (MRI).
Radiolucent line near the right radius (XR)
MSSA (blood culture)Cefotaxime; cefazolinNR
F/1.52016DTAP/LL
(DAPTACEL);
INFLUENZA (SEASONAL)/LL
(FLUZONE QUADRIVALENT);
POLIO VIRUS, INACT./LL
(IPOL)
1Bilateral hip pain; refusal to walk; fever; and decreased appetite.
Right-iliac-bone early osteomyelitis
Right-sacroiliac-joint effusion, adjacent inflammatory changes, and right-iliac-bone early osteomyelitis (MRI)NRNRYes
F/172014 *HPV/NR
(CERVARIX)
NRHospitalized with a diagnosis of osteomyelitisNRNRNRYes
M/22014 *DTAP/LL
(DAPTACEL);
HIB/LA
(PEDVAXHIB);
HEP A/LL
(VAQTA);
MEASLES + MUMPS + RUBELLA + VARICELLA/LL
(PROQUAD);
PNEUMO/RA
(PREVNAR13)
3Swelling and erythema. Hospitalized with diffuse cellulitis“Multiloculated abscesses of the humeral shaft, osteomyelitis of the distal humerus and osteomyelitis of proximal radius and ulna” (MRI)Gram+ cocci (blood culture)Unspecified surgical treatmentNR
F/52013DTAP/LL;
POLIO VIRUS, INACT/LL
unknown brand name and manufacturer
1Unable to bear weight on the right ankle. Diagnosed with osteomyelitis localized in the right ankleNRNRUnspecified IV ABNo
M/2.72012DTAP/LL
(INFANRIX);
POLIO VIRUS, ORAL, unknown brand name and manufacturer
1Fever, erythema at the injection site, hip edema. Hospitalized with a diagnosis of hematogenic osteomyelitisNRNRUnspecified surgical treatmentNo
M/42012HIB/LL
(PEDVAXHIB);
PNEUMO/RL
(PREVNAR13)
1History of allergic rhinitis and croup; fever, left-thigh soreness and claudication; and osteomyelitis of the left femurLeft-femur osteomyelitis (MRI)NRUnspecified IV ABYes
M/132012HPV/LA
(GARDASIL)
13Pain in the left arm and persistent headache. Hospitalized with bacteremia and osteomyelitis in the left humerusLeft-humeral osteomyelitis (MRI)Staphylococcus (blood)Cephazolin (IV), cephalexin (oral, at home)NR
M/0.112012DTAP + IPV + HIB/LL
(PENTACEL);
PNEUMO/LL
(PREVNAR13);
ROTAVIRUS/MO
(ROTATEQ)
0Edema of the thigh and inability to move the leg. Left-femur osteomyelitisPeriosteal elevation (XR), muscle abscess (MRI)MSSA (abscess sample culture)Unspecified IV ABYes
F/0.12011 *HEP B/LL
(RECOMBIVAX HB)
7Erythema and edema in the right inferolateral thigh, reduced ROM, and feverAbscess (US), periosteal reaction in the femur, coherent with osteomyelitis (XR)Gram+ cocci (microscopy) and MRSA (blood and abscess culture)Teicoplanin, cefotaxime.
Abscess drainage and debridement
NR
M/42011PNEUMO
(PREVNAR13)
0Local reaction, claudication involving the left leg, malaise and aches, fever, and pain in the right elbow. “Hospitalized for osteomyelitis”, significant improvement after AB treatmentNegative MRINegative blood cultureUnspecified ABYes
F/0.422010DTAP/NR
(INFANRIX);
PNEUMO/NR
(SYNFLORIX)
0Fever and hesitancy to bear weight on the right leg. Diagnosis of osteomyelitisNegative XR and USNegative blood cultureCefotaxime (IV), flucloxacillin (oral)NR
F/0.022009HEP B
(FOREIGN)
4Maternal fever of unknown origin 4 days before delivery; decreased movement and pain on extension of the left lower leg, pain in the left hip, swollen left ankle, and fever. Septic left hip and presumed osteomyelitis in the left ankleLeg XR and hip US negative; radiological diagnosis of ankle osteomyelitis “pending” at the time of the reportMethicillin-sensitive S. aureus (MSSA) (blood culture, ankle abscess sample)IV oxacillinYes
F/122008HPV/RA
(GARDASIL)
0Osteomyelitis of left armNRNRNRNo
F/122008DT + IPV/NR
(unknown brand name and manufacturer);
HPV/RA
(GARDASIL)
7Arthralgia of left ankle, with edema and erythema; fever; and “osteomyelitis of septic genesis”XR of ankle was normalNRUnspecified ABYes
F/112008HPV/NR
(GARDASIL)
0Complaints of swelling; patient was later hospitalized and diagnosed with osteomyelitisNRNRUnspecified ABYes
M/42008MMR II/NR4OsteomyelitisNRNRNRNo
F/112007PNEUMO/RA
(PNEUMOVAX)
2Erythema, tenderness, induration at the sight of the injection; fever, malaise, and generalized weakness; decreased ROM; and cellulitis and osteomyelitis in the upper right arm Suspected underlying immunodeficiencyCellulitis and osteomyelitis of the right proximal humerus (MRI)NRUnspecified ABYes
M/1.022007HIB + HEP B/LL
(COMVAX);
MMR+VARICELLA/LL
(PROQUAD)
15Fever, refusal to walk, irritability; left-pelvic myositis and fasciitis; osteomyelitis of the left ileum and sacrumSeptic arthritis in the left sacroiliac joint, osteomyelitis of the left ileum and sacrum, pyomyositis of the adjacent musculature with an intramuscular abscess (MRI).
Fluid in right hip joint space (US)
NRIV AB, oral clindamycin.
Muscle abscess drainage, septic joint drainage
Yes
M/82005INFLUENZA/NR
(SEASONAL) (FLUMIST)
4Fever, vomiting, pain in the right leg, foot, wrist, and elbow, inability to walk, and group A streptococcal bacteremia, osteomyelitis, and arthritisNRGroup A streptococcus (blood)Unspecified ABNR
F/0.342005DTAP/NR
(INFANRIX);
HIB/NR
(HIBERIX);
POLIO VIRUS, INACT./NR,
unknown brand name and manufacturer
5Osteomyelitis in the anklesNRNRAmoxicillin trihydrate + potassium clavulanateNR
F/0.282005DTAP + HEPB + IPV/LL
(PEDIARIX);
HIB/RL
(ACTHIB);
PNEUMO/RL
(PREVNAR)
9Fever, irritability, abdominal pain; bilateral otitis media; swelling of left upper leg;
osteomyelitis of left femur and fifth-digit abscess.
Chronic osteomyelitis of the left femur
Increased density of soft tissue due to edema, the stranding of subcutaneous tissue, and left quadriceps musculature; “linear metaphyseal lucency of distal femur” (XR).
Subperiosteal abscess in the left femur, antero-lateral in the proximal region and circumferential in the distal portion (CT).
Pathological fracture of the proximal portion of the femoral metaphysis (XR).
MRSA and coagulase-positive Staphylococcus (culture of wound samples from leg and finger)IV clindamycin and IV vancomycin and rifampicin.
“Ultrasound guided incision and extensive drainage of subperiosteal abscess of left femur; drainage of fifth digit abscess;
Surgery of a large subperiosteal abscess (recurrence) and a small intramuscular abscess”
Yes
F/12004MMR II/NR7Fever, trismus, painful swelling of the right jaw and cervical lymphadenopathy; history of teething; and acute osteomyelitis of the jawLarge soft-tissue mass, improved after treatment, osteolytic foci and pathological fracture in the right jaw, the loss of local fat planes, and the infiltration of subcutaneous fat (CT)NR
sterile blood culture
Amoxicillin–clavulanic acidNR
M/0.082003DTP + HEP B/LL
(TRITANRIX)
3Fever, induration, and swelling at the injection site, thick purulent collection, and osteomyelitis of the femurNRNRCeftriaxoneNR
F/42003DTAP/RL
(INFANRIX);
MMRII/LL;
IPOL/LL;
VARICELLA/RL
(VARIVAX)
23Fever, extreme pain in knee joint.
Osteomyelitis in the right femur
NRS. aureus (surgical sample)Cefazoline.
Surgical drainage of infective focus
Yes
M/1.62002DTAP/LL
(INFANRIX);
HIB/RL
(ACTHIB);
MMRII/RL;
VARICELLA/RL
(VARIVAX)
0Fever, irritability, reduced sleep and eating, and seizures. Later report of S. aureus osteomyelitis, pyomyositis, anemia, and leukopeniaNRS. aureus (sample NR)NRYes
M/0.72002DTAP/NR
(TRIPEDIA);
HIB/NR
(ACTHIB);
POLIO VIRUS, INACT./NR
(IPOL)
4Acute osteomyelitis caused by the same pathogens (not specified) isolated from his throatNRNRUnspecified ABYes
F/12001MMR II/RL0Injection site hematoma and local induration persisting for 3–4 months, evolving over the course of more than a year in an abscess with fistulization and lymphadenopathy. The abscess recurred a first time after surgical treatment and scarring and a second time a month after medical treatment. A physician concluded that this was due to chronic osteomyelitis with osteolysis of the right iliac bone and significant fistulizationLesion with fluid compartments at the injection site (US); an MRI of the pelvis showed muscular infection and damage to the right iliac wing and confirmed the extension of the infective focusS. aureus, S. capitis, S. epidermidis and Pseudomonas aeruginosa were isolated at different times from samples taken from the woundErythromycin and pristinamycine, oracilline and neomycin, and cotrimoxazole.
Necrosectomy and curettage of the soft tissue
Yes
M/101999HEP B/LA
(ENGERIX-B)
2Unable to walk due to acute left-gluteal pain. Diagnosed with osteomyelitis and abscess located in the left iliumXR aided the diagnosis of osteomyelitis and abscessNRNRYes
M/111998HEP B/NR
(RECOMBIVAX HB)
0Fever and pain in the right leg. Diagnosed with osteomyelitis of the right legNRNRNRYes
F/111996HEP B/NR
(ENGERIX-B)
19Fever, shoulder, elbow, ankle and knee arthralgia; patchy erythema and vasculitis; osteomyelitis dxHypercaptation on the right (bone scintigraphy)NRNRYes
NR/11994HEP B/LL
(RECOMBIVAX HB)
2Febrile illness, inability to use the left leg for 5 days. Diagnosed with osteomyelitis of the left femurNRS. aureus (blood culture)NRYes
Acronyms and abbreviations: LL (left leg), LA (left arm), RL (right leg), RA (right arm), HEP B (hepatitis B vaccine), DTAP (Diphtheria and Tetanus Toxoids and Acellular Pertussis Vaccine), HIB (Haemophilus B Conjugate Vaccine), PNEUMO (Pneumococcal Vaccine), POLIO VIRUS (poliovirus vaccine inactivated), DTP + HIB (Diphtheria and Tetanus Toxoids Pertussis and Haemophilus Influenza B Vaccine—Hexavax), MMR II (Measles, Mumps, and Rubella Virus Vaccine, Live), INACT. (inactivated), IPOL (poliovirus vaccine, inactivated), TDAP (ADACEL) (Tetanus and Diphtheria Toxoids and Acellular Pertussis Vaccine—Boostrix/Adacel), ROM (range of motion), DT + IPV (DT-IPV Combined DT and IPV Vaccine), DTAP + HEPB + IPV (Diphtheria and Tetanus Toxoids and Acellular Pertussis Vaccine + Hepatitis B + inactivated poliovirus vaccine), XR (X-ray), MRI (magnetic resonance imaging), CT (computerized tomography), MO (mouth), AB (antibiotics), NR (not reported), MRSA (Methicillin-resistant Staphylococcus aureus), MSSA (Methicillin-sensitive Staphylococcus aureus). * When the year of vaccination was missing, we reported the year in which the report was submitted, which often coincided with the vaccination year. † This indicates the recovery status at the time that the report was submitted to VAERS. “Yes” indicates that the child had already shown clinical improvement or had been discharged form the hospital, “No” indicates that the child had not yet recovered at the time of report submission.
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Garbo, V.; Venuti, L.; Albano, C.; Caruana, C.; Cuccia, A.; Condemi, A.; Boncori, G.; Polara, V.F.; Cascio, A.; Salerno, S.; et al. Investigating Osteomyelitis as a Rare Adverse Effect of Vaccination in the Pediatric Population. Pathogens 2024, 13, 972. https://doi.org/10.3390/pathogens13110972

AMA Style

Garbo V, Venuti L, Albano C, Caruana C, Cuccia A, Condemi A, Boncori G, Polara VF, Cascio A, Salerno S, et al. Investigating Osteomyelitis as a Rare Adverse Effect of Vaccination in the Pediatric Population. Pathogens. 2024; 13(11):972. https://doi.org/10.3390/pathogens13110972

Chicago/Turabian Style

Garbo, Valeria, Laura Venuti, Chiara Albano, Costanza Caruana, Alessandra Cuccia, Anna Condemi, Giovanni Boncori, Valentina Frasca Polara, Antonio Cascio, Sergio Salerno, and et al. 2024. "Investigating Osteomyelitis as a Rare Adverse Effect of Vaccination in the Pediatric Population" Pathogens 13, no. 11: 972. https://doi.org/10.3390/pathogens13110972

APA Style

Garbo, V., Venuti, L., Albano, C., Caruana, C., Cuccia, A., Condemi, A., Boncori, G., Polara, V. F., Cascio, A., Salerno, S., & Colomba, C. (2024). Investigating Osteomyelitis as a Rare Adverse Effect of Vaccination in the Pediatric Population. Pathogens, 13(11), 972. https://doi.org/10.3390/pathogens13110972

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