title: Immunization requirements for travelers.
mesh_terms: D002568:Certification; D022121:Cholera Vaccines; D005260:Female; D006801:Humans; D007114:Immunization; D008297:Male; D012900:Smallpox Vaccine; D014195:Travel
chemical_list: D022121:Cholera Vaccines; D012900:Smallpox Vaccine