Infectious Disease  Infectious Disease Vaccination International Certificate of Vaccination Mandatory Vaccinations - WHO  Special Groups Vaccinations Statement on Meningococcal Vaccination for Travellers - Health Canada Travel, Influenza and Prevention - Health Canada  Vaccination for Poliomyelitis Vaccination for Travellers Vaccine-preventable Diseases, Vaccines and Vaccinations Vaccine Recommendations for Infants and Children (MMR, DTP, polio) CDC  Vaccines for routine Use - WHO Updated 08/16/02