Ministry of Health concerned over increases in dengue cases
Channel: Saint Lucia Government
Date: 2020-08-10

Dengue is endemic to Saint Lucia, meaning that there is continued local transmission which often peaks during and after rainy seasons.
There are four distinct, but closely related, serotypes of the virus that cause dengue (DENV-1, DENV-2, DENV-3 and DENV-4). 
Persons receive lifelong immunity against a serotype once infected with it; however, this immunity does not extend to the other serotypes. 
In fact, infection with one serotype makes an individual more susceptible to a more severe dengue if that individual becomes infected with another serotype.
http://www.govt.lc/news/ministry-of-health-increases-in-dengue-cases-concerning