ABDUL MUTTALIF, Abdul Razak Bin. The Unique and Evidence-Based Meningococcal Vaccine for Hajj and Umrah Pilgrims. International Journal of Human and Health Sciences (IJHHS), [S. l.], v. 9, n. 10, p. S10, 2025. DOI: 10.31344/ijhhs.v9i10.779. Disponível em: https://www.ijhhsfimaweb.info/IJHHS/article/view/779. Acesso em: 31 jan. 2026.