title: Vaccination requirements. Pilgrimage to Mecca (Hajj).
mesh_terms: D001428:Bacterial Vaccines / Q000008:administration & dosage; D003140:Communicable Disease Control / Q000331:legislation & jurisprudence*; D006801:Humans; D008585:Meningitis, Meningococcal / Q000517:prevention & control; D009345:Neisseria meningitidis / Q000276:immunology; D012529:Saudi Arabia; D014195:Travel; D014611:Vaccination / Q000331:legislation & jurisprudence*; D014765:Viral Vaccines / Q000008:administration & dosage; D015004:Yellow Fever / Q000517:prevention & control; D015005:Yellow fever virus / Q000276:immunology
chemical_list: D001428:Bacterial Vaccines; D014765:Viral Vaccines