Subedi, D.D. 2022. Measles outbreak in a vaccinated or never vaccinated children aged 1-5 years in Khyber Pakhtunkhwa (KPK), Pakistan (Lower dir, Upper Dir and Bajawar): Chains of transmission of virus and role of vaccine failure. International Journal of Pharmaceutical & Biological Archive. 13, 1 (Mar. 2022). DOI:https://doi.org/10.22377/ijpba.v13i1.1974.