Cayman Island government scientists dispute Oxitec’s claim that GMO mosquito project was a success

mosquito NationalGeographic
Credit: JOEL SARTORE, NATIONAL GEOGRAPHIC CREATIVE

A British biotech company seeking federal approval to release millions of genetically modified mosquitoes at 12 sites in the Florida Keys to combat naturally occurring mosquitoes that spread deadly diseases like Zika and dengue fever has touted for months its success in an identical pilot project carried out in the Cayman Islands as evidence of the proposal’s efficacy.

But emails released this week to a United Kingdom activist group through a freedom of information request reveal scientists working for the Cayman government’s Mosquito Research and Control Unit dispute the results reported by the company, Oxitec.

“None of the scientists at MRCU would have said that the project was a success,” Dr. Alan Wheeler, assistant director of the MRCU’s research and development office, wrote in a Feb. 18 email to Nancy Barnard, then-acting MRCU director.

…

Wheeler wrote in an Oct. 25, 2017, email to Catherine MacGillvray, an information officer with the Government Information Service. “Targets were not set for the release and therefore, no targets were achieved. MRCU was expecting to see a reduction in the region of 90%+ as had been reported in all other Oxitec releases. This was not achieved and the figure of 62% reduction is also not accepted by MRCU.”

Read full, original post: Previous GMO mosquito project’s success may have been overstated, emails reveal

Related Articles

Infographic: Global regulatory and health research agencies on whether glyphosate causes cancer

Infographic: Global regulatory and health research agencies on whether glyphosate causes cancer

Does glyphosate—the world's most heavily-used herbicide—pose serious harm to humans? Is it carcinogenic? Those issues are of both legal and ...

Most Popular

ChatGPT-Image-Mar-10-2026-01_39_01-PM
Viewpoint—“Miracle molecule” debunked: Why acemannan supplements don’t work
Wave Crest Over Red Cross
Viewpoint: Here are the election-inspired Trump administration healthcare policy reversals expected in the coming months
Bayer Crop Circle in Golden Wheat
Making fertilizer from thin air: Bayer’s gene-editing innovation could dramatically cut chemical fertilizer use in growing food
Blue Checklist in Centered Hand
Viewpoint: From Medicaid cuts to MAHA-backed anti-vaccine and chemical hysteria, voters reject Republicans’ science-skeptical agenda
Democratic Donkey Plowing at Sunset
Viewpoint: Democratic tsunami: As the red tide recedes, here are the most likely shifts in food and agricultural policy
p22_spraying_2
How climate change is driving increased pesticide usage
Aerial Sprayer Over Gradient Fields
Farming, food, and chemicals: Post-midterms, the MAHA alliance between Democrats and MAGA Republicans is bruised but not cowed. What comes next?
glp menu logo outlined

Get news on human & agricultural genetics and biotechnology delivered to your inbox.