How to prevent dengue fever (part 4)

Published : 30 Jun 2022 09:13 PM


In areas of the world where dengue fever is common, one dengue fever vaccine (Dengvaxia) is approved for people ages 9 to 45 who have already had dengue fever at least once. The vaccine is given in three doses over the course of 12 months.

The vaccine is approved only for people who have a documented history of dengue fever or who have had a blood test that shows previous infection with one of the dengue viruses — called seropositivity. In people who have not had dengue fever in the past (seronegative), receiving the vaccine appears to increase the risk of severe dengue fever and hospitalization due to dengue fever in the future.

Dengvaxia is not available for travelers or for people who live in the continental United States. But in 2019, the US Food and Drug Administration approved the vaccine for people ages 9 to 16 who have had dengue fever in the past and who live in the US territories of American Samoa, Guam, Puerto Rico and the US Virgin Islands — where dengue fever is common.

    Courtesy: Mayo Clinic