A few more cases of malaria have been confirmed in Kingston, Jamaica, bringing the total number of confirmed cases to 370. The outbreak started in fall of 2006 and involves Plasmodium Falciparum, the most severe type.
Malaria is not normally found on Jamaica and the CDC is advising chloroquine, as prophylaxis, for those staying overnight in Kingston. The other areas of Jamaica are not considered at risk.
The Jamaican government is working to control vectors (mosquitoes) by spraying and destroying possible breeding grounds.
This is believed to be a temporary problem, but the advice is still to take prophylaxis for people sleeping in Kingston, for now.
Here is a CDC link for more information:
CDC Malaria in Kingston, Jamaica
Hope this helps!
You can learn more about malaria here:
Adventure Doc Malaria Page