ADIL MAHMOOD; SEHRISH NAZIR; MEHAK ZAFAR; RABIA SAEED; KOMAL NADIR; ABDUL RAZZAQ. Frequency of Hospital Admission among COVID-19 Patients with and without Prior Vaccination. Avicenna Journal of Health Sciences, [S. l.], v. 3, n. 3, p. 108–114, 2026. Disponível em: https://avicennajhs.com/index.php/ajhs/article/view/209. Acesso em: 7 oct. 2026.