Chikungunya fever must be considered in travelers who develop fever and arthritis after traveling to areas affected by an ongoing epidemic. Related arthritis mainly affects smaller joints and often persists for extended periods. Serological testing may have negative results during the first week of the disease; diagnosis using polymerase chain reaction appears to be more reliable during this time. Travelers to areas of epidemicity should be informed of the risk of infection and of adequate preventive measures, such as protection against mosquitos.
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