The New Jersey Departments of Health (NJDOH) and Environmental Protection (NJDEP) are investigating a case of malaria in a resident of Morris County. The resident has no history of international travel, and it is possible they were infected with malaria locally.
NJDOH is working closely with the U.S. Centers for Disease Control and Prevention (CDC) to determine potential sources of infection. If confirmed, this would be the first known locally acquired case of malaria in New Jersey since 1991.
Although the Anopheles mosquitoes that transmit malaria are present in New Jersey, the risk of locally acquired malaria remains low. Acting Health Commissioner Jeff Brown advises taking precautions to prevent mosquito bites and early diagnosis and treatment for returning travelers.
Eliminating standing water around properties can help reduce the risk of mosquito breeding. Environmental Protection Commissioner Shawn M. LaTourette emphasizes the importance of this step in reducing the risk of mosquito-borne diseases like malaria, West Nile virus, and Eastern equine encephalitis.
Malaria is a mosquito-borne disease caused by a parasite that can be cured with prescription antimalarial drugs. The risk of locally acquired malaria remains low, with about 100 travel-associated cases reported in New Jersey each year. Successful treatment of individuals confirmed to have malaria significantly reduces the risk of further transmission.
To prevent mosquito-borne diseases like malaria, residents should:
– Use EPA-registered insect repellent and wear protective clothing
– Eliminate standing water around properties
– Take precautions while traveling to countries with widespread malaria
The New Jersey State Mosquito Control Commission and NJDEP Office of Mosquito Control Coordination are working together with local authorities to minimize risks to the public.
Source: https://www.nj.gov/health/news/2025/approved/20250818a.shtml