“Breakthrough Infection After COVID-19 Vaccination: A Threat for Nepal Due to SARS-CoV-2 Variants Circulating in 2nd Wave Ravaging India”. Journal of Patan Academy of Health Sciences 8, no. 2 (August 31, 2021): 38–48. Accessed July 9, 2026. https://nepjol.info/index.php/JPAHS/article/view/37287.