“Relation of Vaccination With Severity, Oxygen Requirement and Outcome of COVID-19 Infection in Chattogram, Bangladesh”. Archives of Clinical and Biomedical Research 5, no. 6 (December 16, 2021): 993–999. Accessed September 17, 2026. https://fortunejournals.org/ojs/index.php/acbr/article/view/14884.