During 1954, 452,049 persons traveled outside the United States, not counting the thousands who daily cross the Canadian or Mexican borders. The International Certificates of Vaccination form that physicians are called on to complete whenever a person is vaccinated for international travel is an important document. A person can be quickly processed by quarantine officers here and abroad when his vaccination certificate contains complete information and is properly authenticated.
The vaccinating physician can help in this procedure by always using the International Certificates of Vaccination form to record complete immunization data and by instructing the prospective traveler to have the certificate authenticated by the local or state health officer. The health officer can speed the process by using his official stamp or seal to authenticate the certificate. If the health officer does not have either, the United States Public Health Service suggests that he have a stamp made that includes