The deadliest animal in the world isn’t the lion, the rhino
or even the shark; it’s the lowly mosquito. Because they can carry and transmit
diseases like Zika virus, West Nile virus, Chikungunya virus, dengue, and
malaria, mosquito bites are responsible for more than a million human deaths worldwide
every year. But not all mosquitoes bite. Male mosquitoes feed on nectar; only females
need blood to produce eggs. Last month researchers at Virginia Tech announced an
interesting discovery: by changing a single gene, they can convert biting
female mosquitoes into non-biting males. Even more exciting, the change persists
through several generations. Every summer I fall victim to these flying
nasties. I haven’t contracted West Nile or malaria, but I’ve lost several
nights’ sleep to scratching. I’ve imagined hundreds of creative ways to eradicate
mosquitoes. But gene therapy and gender conversion never once entered my mind.
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