Piryani RM, Piryani S, Mukhia R. COVID-19 and Herd Immunity: A Dilemma to Understand. J. KIST Med. Coll. [Internet]. 2020 Jul. 31 [cited 2024 Nov. 21];2(2). Available from: https://nepjol.info/index.php/jkistmc/article/view/33782