Experimental Infection of Pigs with Recent European Porcine Epidemic Diarrhea Viruses
Abstract
:1. Introduction
2. Materials and Methods
2.1. Animals and Housing
2.2. Virus Inoculation
2.3. Sampling, Sample Analysis, and Scoring of Pigs
2.4. Euthanasia and Necropsies
2.5. Virus Isolation
3. Results
3.1. Inoculation of Pigs and Analysis of Infection
3.2. Presence of Viral RNA Measured by RT-qPCR
3.3. Antibodies Measured by ELISAs and IPMA
3.4. Clinical Assessment and Necropsies
3.5. Virus Isolation Attempts
4. Discussion
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Inoculation | Group 1 (Pigs 1–4) | Group 2 (Pigs 5–8) |
---|---|---|
1st on PID 0 (4 pigs per group) | PEDV (Germany): pool of material 6150-D15 and -D16 * (Ct = 20.3) | SeCoV (Slovakia): feces/intestinal homogenate. For pigs 5 and 6 (Ct = 25) and for pigs 7 and 8 (Ct = 30–35) |
2nd on PID 11 (3 pigs in group 1, 4 pigs in group 2) | PEDV (Germany): material from pig 1 (Ileum and intestinal contents, Ct = 20.9) | PEDV (Italy): pool of material (Ct = 13–17) |
3rd on PID 24 (2 pigs per group) | PEDV (Germany): material from pig 1 (Ileum and intestinal contents) | PEDV (Italy): material from pig 5 (small intestine and intestinal contents, Ct = 14.4) |
4th on PID 39 (2 pigs per group) | PEDV (Germany): material from pig 1 (Ileum and intestinal contents) | PEDV (Italy): material from pig 5 (small intestine and intestinal contents) |
Group 1 | Group 2 | |||
---|---|---|---|---|
Pig 1 († PID 4) | Pig 2 († PID 15) | Pig 5 († PID 15) | Pig 6 († PID 15) | |
External observations | No remarks | Slightly smudged/dirty hindquarters | Normal to lean body condition score | Smudged/dirty hindquarters |
Internal findings | No remarks | Accumulation of fluid in some parts of the lumen and slight hyperemia of the small intestine | Accumulation of fluid in the lumen of the small intestine. Watery contents in the ileum. Liquid contents and gas in the colon. | Substantial accumulation of fluid in the lumen and dilation of the small intestine. Liquid contents and some gas in the colon. |
PEDV RT-qPCR | Ct 20.9 | Ct 14.3 | Ct 14.4 | Ct 16.0 |
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Lazov, C.M.; Lohse, L.; Belsham, G.J.; Rasmussen, T.B.; Bøtner, A. Experimental Infection of Pigs with Recent European Porcine Epidemic Diarrhea Viruses. Viruses 2022, 14, 2751. https://doi.org/10.3390/v14122751
Lazov CM, Lohse L, Belsham GJ, Rasmussen TB, Bøtner A. Experimental Infection of Pigs with Recent European Porcine Epidemic Diarrhea Viruses. Viruses. 2022; 14(12):2751. https://doi.org/10.3390/v14122751
Chicago/Turabian StyleLazov, Christina M., Louise Lohse, Graham J. Belsham, Thomas Bruun Rasmussen, and Anette Bøtner. 2022. "Experimental Infection of Pigs with Recent European Porcine Epidemic Diarrhea Viruses" Viruses 14, no. 12: 2751. https://doi.org/10.3390/v14122751
APA StyleLazov, C. M., Lohse, L., Belsham, G. J., Rasmussen, T. B., & Bøtner, A. (2022). Experimental Infection of Pigs with Recent European Porcine Epidemic Diarrhea Viruses. Viruses, 14(12), 2751. https://doi.org/10.3390/v14122751