WASEEM IQBAL; IKRAM ULLAH; UROOSA IRUM; SAIMA SIDDIQI; KHALID MAHMOOD KHAN. An Estimate of Protective Immunity against SARS-CoV2: Comparison of Different Vaccine Types. Proceedings of the Pakistan Academy of Sciences: B. Life and Environmental Sciences, [S. l.], v. 60, n. 3, p. 377–382, 2023. DOI: 10.53560/PPASB(60-3)749. Disponível em: https://ppaspk.org/index.php/PPAS-B/article/view/707. Acesso em: 2 dec. 2023.