Saraswathy AS, Veetil BM, Jose R. COVID-19 vaccine breakthrough infections among health care workers of a tertiary care center in North Kerala: a descriptive study. Int J Community Med Public Health [Internet]. 2023 Oct. 31 [cited 2025 Oct. 25];10(11):4339-43. Available from: https://www.ijcmph.com/index.php/ijcmph/article/view/11727