health

What is dengue, and why is it so widespread this year?

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By Jenny VAUGHAN

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© 2019 AFP

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Sri Lanka has become Mosquito-free country just few years ago, why can't other countries be?

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Sri Lanka has become Mosquito-free country just few years ago, why can't other countries be?

That is an incorrect statement. Sri Lanka is not mosquito free. It is however malaria free. That's a good accomplishment, but has nothing at all to do with this article and dengue.

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Mosquitoes are infected with the naturally-occurring Wolbachia bacteria -- which is mostly dengue-resistant -- and are released to repopulate wild mosquito colonies to reduce disease transmission.

To clarify, is not that the bacteria can resist the infection of the dengue virus, mosquitoes infected with the bacteria become resistant to a later infection of the virus, so if enough mosquitoes have the Wobachia then epidemics can be stopped.

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