Links Additional information on health advice and vaccination requirements for travelers can be found in the following websites: Center For Disease Control: CDC- Official US government health recommendations for traveling. http://wwwn.cdc.gov/travel/ WHO: World Health Organization - International travel and health: http://www.who.int/ith/en/ The National Travel Health Network and Centre (NaTHNaC) Travellers homepage containing general information and factsheets regarding possible sources of illness and precautions to take while you travel. http://www.nathnac.org/travel/index.htm