Genetically Modified Mosquitoes Could Wipe Out Malaria

By Alexandra Sifferlin

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After six years of trying, scientists have discovered a way to genetically modify mosquitoes so they produce sperm that will only conceive male offspring.

Female mosquitoes are the ones who bite people and pass along malaria, so scientists think if they can significantly lower the number of female mosquitoes the rate of malaria will also go down. In their researchpublished in the journal Nature Communications, the researchers created a modified strain of mosquitoes that produced 95% male offspring.

When they introduced the strain to a five caged wild mosquito populations, the modified pests eradicated entire mosquito populations in four of them. There were too few females for the populations to survive. The researchers hope that this same scenario could happen in the wild, and malaria-carrying mosquitoes could die off.

Their findings are important because the scientists are the first to interfere in the sex ratios of mosquitoes, and their strategy could be successful in eliminating malaria, which remains a fatal disease in some sub-Saharan regions in Africa. Malaria prevention methods worldwide have brought down malaria mortality rates by 42%, but scientists are concerned over insecticide-resistant mosquitoes that pass along drug resistant malaria.

“The research is still in its early days, but I am really hopeful that this new approach could ultimately lead to a cheap and effective way to eliminate malaria from entire regions. Our goal is to enable people to live freely without the threat of this deadly disease,” said study author Roberto Galizi from the Department of Life Sciences at Imperial College London in a statement.

Source: time.com

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