MUNGMUNGPUNTIPANTIP, Rujittika; WIWANITKIT, Viroj. COVID-19 Vaccine, Availability Herd Immunity. International Journal on Current Trends in Drug Development & Industrial Pharmacy [ISSN: 2581-7655 (online)], [S.l.], v. 5, n. 1, 2021. ISSN 2581-7655. Available at: <http://medical.eurekajournals.com/index.php/IJCTDDIP/article/view/84>. Date accessed: 13 nov. 2024.