Cayman: Targeted Treatments Continue Amid Higher Mosquito Counts
MRCU
Figures from our daily trap collections, field observations, and public reports all indicate higher mosquito numbers. Our crews are out in full force, working to bring populations down as quickly as possible.
GRAND CAYMAN, Cayman Islands (13 August 2025) – The Mosquito Research and Control Unit (MRCU) continues to work diligently to reduce mosquito numbers across the Cayman Islands. As noted in our previous update<https://www.gov.ky/news/press-release-details/mrcu-ramps-up-response-to-mosquito-emergence>, mosquito activity was expected to increase this week, and our latest data confirms this prediction.
Figures from our daily trap collections, field observations, and public reports all indicate higher mosquito numbers. Our crews are out in full force, working to bring populations down as quickly as possible.
The primary species currently causing discomfort is the black salt marsh mosquito (Aedes taeniorhynchus). In addition to being a biting nuisance, this mosquito can transmit heartworm to dogs and cats. Pet owners are encouraged to speak with their veterinarians about appropriate preventive medication to protect their animals.
We are cautiously optimistic that numbers will decrease by next week. However, it is important to note that rainfall and tidal events can trigger further outbreaks. Our work is data-driven – MRCU collects and analyses information from traps and field surveys daily to guide operational decisions and target treatment in the most effective way possible.
Residents can be assured that MRCU remains committed to keeping mosquito populations as low as possible while protecting both public health and the environment.
To learn more, visit the MRCU website and social media platforms<https://linktr.ee/CaymanMRCU?utm_source=linktree_profile_share<sid=c17f6b01-6596-4a30-b513-41bd031bff8e>.
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About the Mosquito Research and Control Unit (MRCU):
The MRCU is dedicated to safeguarding the health, environment, and quality of life of the people of the Cayman Islands by conducting innovative, science-based mosquito surveillance, research and control operations.
