Mosquito Research & Control Unit (MRCU) | Cayman Islands Government - Mosquito Research Control Unit

Latest News

Mosquito Counts Fall as Control Efforts Continue

08 October 2026 | Press Release

This is encouraging progress, but mosquito numbers remain high. The improvement is unlikely to be noticeable to the public at this stage, with elevated biting rates continuing and heavy biting still reported in some areas.

MRCU Advises of Expected Increase in Mosquito Activity

29 September 2026 | Press Release

The Mosquito Research and Control Unit (MRCU) is advising residents across all three Cayman Islands to expect an increase in mosquito activity over the coming days, following higher than normal tides in wetland areas combined with increased rainfall.

MRCU Launches Aerial Larviciding Operation Across Grand Cayman

11 September 2026 | Press Release

The operation will begin the West Bay and progressively move east across the island. It is expected to take approximately one week to complete, weather permitting

More Press Releases →

Featured

Farewell and Best Wishes to Salomon Chavez

02 October 2026 | Blog

His 21 years of service were also marked by an exemplary record, reflecting the professionalism, dedication and character he brought to MRCU each day.

World Mosquito Day Highlights MRCU’s Role in Building Modern Cayman

18 August 2026 | Blog

For the Cayman Islands, the day is also an opportunity to remember just how different life was before organised mosquito control and the important role MRCU has played in helping shape modern Cayman

Prioritising Safety Through Continued Training

10 June 2025 | Blog

At the Mosquito Research & Control Unit (MRCU), safety is always a top priority — for our team and for the wider community. That’s why we’re committed to ongoing staff training and continuous education to ensure our operations meet the highest standards.

What We Do

Our Purpose: Protecting Today, Safeguarding Tomorrow.

The Mosquito Research & Control Unit (MRCU) is dedicated to protecting the health and well-being of the Cayman Islands by reducing mosquito populations and preventing the spread of mosquito-borne diseases. Since 1965, we’ve used a combination of physical, biological, and chemical methods to manage mosquito levels in a way that’s effective, safe, and sustainable. Through our research, public outreach, and sharing of resources, MRCU is committed to being a trusted source of knowledge and support. We strive to empower residents with the information and tools they need to create a safer, healthier community.