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Dengue is a viral infection that’s common in countries with subtropical and tropical climates. It is transmitted through the bite of a female mosquito (Aedes aegypti or A. albopictus) carrying the dengue virus (DENV). Although many cases of DENV infection involve only mild symptoms, severe dengue can be life-threatening and requires hospitalization.

According to the World Health Organization (WHO), there are four distinct, but closely related, serotypes of DENV. This means that a person can be infected by the virus as many as four times. Studies have also found that people who recover from infection by one serotype only develop partial and temporary cross-immunity to the other serotypes. Subsequent infections by other serotypes increases a person’s risk of developing severe dengue.

Dengue is a viral infection that’s common in countries with subtropical and tropical climates. It is transmitted through the bite of a female mosquito (Aedes aegypti or A. albopictus) carrying the dengue virus (DENV). Although many cases of DENV infection involve only mild symptoms, severe dengue can be life-threatening and requires hospitalization. According to the World Health Organization (WHO), there are four distinct, but closely related, serotypes of DENV. This means that a person can be infected by the virus as many as four times. Studies have also found that people who recover from infection by one serotype only develop partial and temporary cross-immunity to the other serotypes. Subsequent infections by other serotypes increases a person’s risk of developing severe dengue.

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The good news is he knows what is ailing him. A lot of people and doctors never think of testing for Dengue. Most in North America seem to get it when traveling to the Caribbean.