Carte Jaune  The Carte Jaune or Yellow Card is an international certificate of vaccination (ICV). It is issued by the World Health Organization. It is recognised internationally and may be required for entry to certain countries where there are increased health risks for travellers. The Yellow Card should be kept in the holder's passport, as it is a medical passport of sorts. Note that the example shown here is the American version of the WHO-ICV, issued by U.S. Department of Health and Human Services. It is available through the Government Printing Office. The original ICV printed and distributed by WHO is found in two versions: 1) English - French (bilingual) or 2) English - French - Arabic (trilingual). These WHO versions do not have pages to show medical contraindication to vaccination, personal health history, state of health, medical treatments, known sensitivities, medications taken regularly, and ophthalmic information. The WHO versions are available from the WHO Bookstore, and they can be ordered in quantities of 5,000 or more, for overprint. The Yellow Fever section is the most important part of the certificate. Other variants of the Yellow Fever certificate are valid only if the card follows the standardized format, and has been officially approved by WHO. There has been a revision in the format, title and the rules on the 2007 issue. It is now called, "International Certificate of Vaccination or Prophylaxis", and the overprint service is no longer available. The vaccine certificate has columns to fill out with dates, nature of vaccine, dose, and physician's signatures. The date must be in the order of DD/MM/YYYY. It is common to see the physician complete the certificate using product name alone, and not indicate the "nature" of the vaccine. In order to make the certificate "international", it is strongly advised that the physician also mentions this (i.e. "Havrix  1440 El.U." instead of "Havrix" alone), since the brand name may vary in different parts of the world. It will also help if this is accompanied with the lot number, since the number and the signature together will improve the authenticity of the certificate, as well as reporting when unexpected accidents or illnesses happen. If the physician is willing to put his/her practice address and telephone information, it is best practice that the address also include the country name, and the phone number starting with the country code. The physician must understand that the card is used internationally and not many people outside of a country would know the American or other state names, country codes, and accreditations.