**5. Conclusions**

Our findings sugges<sup>t</sup> the need for the COVID-19 vaccination to halt community transmission as well as to continue all preventive measures such as mask, hand wash and social distancing. Additionally, an optimal post-recovery follow-up strategy to allow the safe return of COVID-19 patients to the workforce may be considered.

**Supplementary Materials:** The following are available online at https://www.mdpi.com/2414-6 366/6/2/41/s1, Figure S1: Phylogenetic tree based on the SARS-CoV-2 genome, demonstrated homology between the icddr,b SARS-CoV-2 genomes (case numbers 2 and 4) and other reported SARS-CoV-2 genomes from Bangladesh retrieved from the GISAID database.

**Author Contributions:** Study conceptualization: P.D., S.M.S., R.M., M.R. (Mustafizur Rahman), M.R. (Mahmudur Rahman); literature research: P.D., M.R. (Mustafizur Rahman), M.R. (Mahmudur Rahman), R.M.; data collection: P.D., S.M.S., Z.A., A.N., R.S., N.A.R., K.C., R.A., S.P.; data analysis: P.D., M.M.R., A.A.; results interpretation: P.D., M.R., A.G.R., M.Y.H., M.Z.R.; manuscript writing: P.D., S.M.S., M.R. (Mustafizur Rahman), M.R. (Mahmudur Rahman), A.G.R.; manuscript review: J.D.C., A.G.R., R.M., S.B., T.A., M.R. (Mustafizur Rahman); coordination: M.R. (Mustafizur Rahman). All authors have read and agreed to the published version of the manuscript.

**Funding:** The case report is a part of "COVID-19 testing and tracing in Bangladesh" study funded by the Bill and Melinda Gates Foundation (Investment ID INV-017556).

**Institutional Review Board Statement:** This study is in line with the ethical statement of institutional review board of icddr,b (PR-21010, ACT-01108).

**Informed Consent Statement:** Informed consent was obtained from all subjects involved in the study.

**Data Availability Statement:** Data cannot be shared publicly because they are confidential. Data are available from the respective department of icddr,b for researchers who meet the criteria for access to confidential data.

**Acknowledgments:** icddr,b acknowledges with gratitude the commitment of the Bill and Melinda Gates Foundation to its research efforts. icddr,b is grateful to the Governments of Bangladesh, Canada, Sweden and the UK for providing core support. We are grateful to our study participants for their time and cooperation.

**Conflicts of Interest:** The authors declare no conflict of interest.
