Moderate Mosquito Activity Expected Over Easter

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Moderate Mosquito Activity Expected Over Easter

1 April 2026 | Press Release | By: Kevin Watler

The Mosquito Research and Control Unit (MRCU) is advising the public that moderate mosquito activity is expected across the Cayman Islands over Easter, with higher levels of biting likely in some areas.

While mosquito activity is present across the islands, residents and visitors, especially those planning to camp or spend extended time outdoors, should take simple steps to reduce exposure.

Campers and outdoor enthusiasts are encouraged to use mosquito repellent containing DEET, Picaridin, or IR3535. Products with higher concentrations provide longer lasting protection.

Wearing lightweight, breathable clothing that covers the skin can also help reduce bites while keeping you comfortable. Materials such as linen or moisture wicking fabrics are good options.

Much of the nuisance biting at this time of year is caused by mosquitoes that breed in swamps and wetlands. These mosquitoes can travel several miles and are known for their very aggressive and persistent biting behaviour, making them particularly vicious. While they do not transmit diseases to humans, they can transmit heartworm to dogs and cats.

With Easter falling in April, which is also Heartworm Awareness Month, MRCU is reminding pet owners to ensure their animals are up to date with heartworm prevention medication.

Mosquitoes are a natural part of our environment, and managing them requires consistent effort. Effective adult mosquito control takes place during a short window just after sunset. Adult mosquitoes are those that have emerged from the water and are actively flying and biting. These are the mosquitoes responsible for nuisance biting and are the target of adult control operations.

As we head into the long weekend, MRCU’s Aircraft Section will be carrying out evening operations, beginning approximately 15 minutes after sunset, to target adult mosquito populations. Ground operations will also be deployed in areas where higher mosquito activity has been identified.

MRCU’s control operations are data driven, using a combination of trap data, field observations and public feedback to determine where treatment is most needed.

Leonardo Rodriguez, Ground Operations Manager, encouraged residents to play an active role by reporting areas with increased activity.

“Public reports are an important part of how we respond. When residents share where they are experiencing heavier than usual biting, it allows us to better target our operations and respond more effectively. Doing so helps us help you, and strengthens the overall impact of our work across the islands.”

Residents can report mosquito activity to mrcu@gov.ky.

MRCU teams remain active across the islands and will continue working to keep mosquito populations as low as practical.

To learn more, visit MRCU social media platforms.

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Agriculture, Environment & Natural Resources Press Release Mosquito Research and Control Unit (MRCU)