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Drs McKinney and Barnas identify a legitimate problem that has concerned the Travelers' Health Section, Division of Quarantine, Centers for Disease Control, for many years. The United States is signatory without reservation to the International Health Regulations as passed by the World Health Assembly of the United Nations. The Centers for Disease Control publishes and promotes the requirements as submitted to the World Assembly by member states. The suggestion that the Centers for Disease Control publish in the annual Health Information for International Travel the actual practice of other countries, in addition to the official requirement as reported to us by the World Health Organization, is unfortunately not feasible. One of the primary reasons is that the actual practices at the ports of entry may vary over time and with different personnel. The actual practices also may not be in accord with the country's explicit government policies.On
McCance CR. Travelers' Immunizations-Reply. JAMA. 1990;264(14):1812. doi:10.1001/jama.1990.03450140032028