CHICAGO (Reuters) – U.S. health regulators have cleared the way for a trial of genetically modified mosquitoes in Florida that can reduce mosquito populations, potentially offering a new tool to fight the local spread of Zika and other viruses.
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Thousands of residents in tropical northern Australia have begun breeding mosquitoes at their homes as part of a trial which – if successful – could enable entire cities or countries to be protected from the Zika virus for as little as 69p a person.
The participating residents in Townsville in the state of Queensland on Monday began collecting special boxes which contain about 100 mosquito eggs each – along with food for the hatched mosquitoes – as part of a breeding program which will take about 12 weeks and is designed to end the spread of mosquito-borne viruses in the small city, which has 170,000 residents.
The hatched mosquitoes, supplied by Australian scientists, carry bacteria called Wolbachia which prevents them from transmitting viruses such as Zika and dengue. Crucially, these mosquitoes have been shown to pass the Wolbachia to offspring, so that entire mosquito populations are quickly overtaken by those which do not transfer viruses.
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