There are four types of dengue virus, simply known as 1, 2, 3 and 4. When someone is first infected, their body builds antibodies against that type for life.

There are four types of dengue virus, simply known as 1, 2, 3 and 4. When someone is first infected with dengue, their body builds antibodies against that type for life.

Dengue is a viral disease caused by any of the four dengue viruses, and it is spread to people through mosquito bites. Up to 400 million people are infected each year.

The dengue virus causes dengue hemorrhagic fever, shock and encephalitis. The four types of virus are all sufficiently different that individuals vaccinated against one virus type are still ...

There are four types of dengue virus, simply known as 1, 2, 3 and 4. When someone is first infected, their body builds antibodies against that type for life.

Still, they can become infected again by one of the other three virus types. If people are infected for a second, third or fourth time, they may develop severe dengue fever.

Dengue is not a fun illness to have—very few things nicknamed “break-bone” are. Only about one in four infected with the dengue virus will develop symptoms.

There are four types of dengue virus, simply known as 1, 2, 3 and 4. When someone is first infected, their body builds antibodies against that type for life.

Serotype 4 of the dengue virus (Denv-4), which resurfaced in Roraima in 2010, 31 years after it was first identified in the same state, is once again causing concern, with cases recorded in Amazonas, ...