News - Mosquito Research Control Unit
News

Mosquito Counts Fall as Control Efforts Continue

MRCU Advises of Expected Increase in Mosquito Activity
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
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

MRCU Shares Expertise at International Mosquito Control Symposium in Oman
MRCU and the University of Glasgow were the only international organisations invited to participate and present at the symposium

MRCU Continues Response As Seasonal Mosquito Numbers Remain Elevated
Elevated tides have repeatedly pushed water into large areas of low-lying wetland, including locations that may remain dry for extended periods. This creates ideal conditions for large numbers of dormant mosquito eggs to hatch at approximately the same time

Seasonal Increase in Mosquito Activity Expected Across Grand Cayman
This will be the second noticeable increase during the current mosquito and rainy season and is consistent with the seasonal conditions typically experienced at this time of year
MRCU Officer Helps Resident Receive Urgent Care
“I was quite ill, and he noticed that I wasn't breathing well at all. He insisted that he wasn't going to leave until the ambulance arrived because no one else was there with me.” –Ms. Viv

MRCU Staff Complete Training to Support Safe and Effective Mosquito Control
Unit (MRCU) recently participated in the department's annual safety and professional development workshop, strengthening their knowledge of industry best practices and reinforcing MRCU's commitment to continuous learning, workplace safety and operational excellence

MRCU Battles Elevated Mosquito Numbers as Data Shows Encouraging Decline
Despite the challenges, MRCU remains optimistic as the data show mosquito numbers trending down. However, with the recent rainfall, additional mosquito emergences are expected. Mosquito numbers commonly increase around 10 days after heavy rainfall events, depending on the amount of standing water and conditions in breeding areas
To see articles published before May 2025, visit: mrcu.cigarchives.gov.ky