Alaa Ali Salih, Mayasah Abdulleah Sadiq, Waleed Araf Tofeek Al-Ani, Rusul AbdulKareem Mohammed, and Hamzah Abdulleh Mohammed, “Prevalence of breakthrough COVID-19 infection among healthcare workers in Baghdad”, J Pak Med Assoc, vol. 74, no. 10 (Supple-08), pp. S56-S59, Sep. 2024.