Disease information
Specific infectious diseases of potential risk for travellers
Depending on the travel destination, travellers may be exposed to a number of infectious diseases; exposure depends on the presence of infectious agents in the area to be visited. The risk of becoming infected will vary according to the purpose of the trip and the itinerary within the area, the standards of accommodation, hygiene and sanitation, as well as the behaviour of the traveller. In some instances, disease can be prevented by vaccination, but there are some infectious diseases, including some of the most important and most dangerous, for which no vaccines exist.
General precautions can greatly reduce the risk of exposure to infectious agents and should always be taken for visits to any destination where there is a significant risk of exposure, regardless of whether any vaccinations or medication have been administered.
Modes of transmission and general precautions
The modes of transmission for different infectious diseases are diverse:
General precautions to prevent infections are outlined in the Chapter 5 of the international travel and health situation publication.
Non vaccine-preventable diseases
The main infectious diseases to which travellers may be exposed, and precautions for each, are detailed in the Chapter 5 of the International travel and health situation publication. The most common infectious illness to affect travellers, namely travellers’ diarrhoea, is covered in Chapter 3 of the International travel and health situation publication. Because travellers’ diarrhoea can be caused by many different foodborne and waterborne infectious agents, for which treatment and precautions are essentially the same, the illness is not included with the specific infectious diseases.
Information on malaria, one of the most important infectious disease threats for travellers, is provided separately.
The infectious diseases listed below have been selected on the basis of the following criteria:
Special feature
Vaccine-preventable diseases
Information about available vaccines and indications for their use by travellers is provided in the pdf entitled vaccine-preventable diseases and vaccines beside. Advice concerning the diseases for which vaccination is routinely administered in childhood, i.e. diphtheria, measles, mumps and rubella, pertussis, poliomyelitis and tetanus, and the use of the corresponding vaccines later in life and for travel, is also given in the section Vaccines. These diseases are not included in this chapter.
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