Aqsa Naseer, Madeeha Nazar, Jamila Khan, Humera Nasim, Mujeeb Khan, Nida Anjum, Muhammad Umar 2022. Recurrence of COVID-19 Infection in Healthcare Workers after complete Vaccination. Pakistan Journal of Medical & Health Sciences. 16, 10 (Nov. 2022), 208. DOI:https://doi.org/10.53350/pjmhs221610208.