A member asked:

If i have had dengue fever before, should i avoid traveling to countries with prevalent dengue as a rule to avoid hemorrhagic fever?

3 doctors weighed in across 2 answers
Dr. Hunter Handsfield answered

Specializes in Infectious Disease

Mosquito control: For 100% certainty, avoiding travel to areas with dengue is all you can do. However, "avoid" is relative, depending on the reason and importance of travel. In dengue areas, the main thing is to be very compulsive about preventing mosquito bites with proper clothing, good repellant (DEET or picaridin, nothing else is reliable), and mosquito nets at night if exposure is likely (open windows, tents).

Answered 2/25/2016

1.6k views

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Dr. Mazen Kherallah answered

Specializes in Infectious Disease

Yes: Dengue is caused by any one of four related viruses transmitted by mosquitoes. Recovery from infection by one provides lifelong immunity against that particular serotype. However, cross-immunity to the other serotypes after recovery is only partial and temporary. Subsequent infections by other serotypes increase the risk of developing severe dengue.

Answered 11/28/2017

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