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What is dengue fever? History of disease and medicine

By |2018-04-25T10:34:33+00:00September 6th, 2017|Science|

Dengue history: the dengue virus - magnified many times Dengue history Probably dengue fever didn't exist before the late 1700s AD, so in the ancient and medieval worlds there was no dengue fever. Most people think that the virus that causes dengue evolved from some earlier virus that didn't make people sick. Dengue appeared all over [...]

Why do mosquitoes bite? Biology

By |2018-04-15T17:18:17+00:00May 25th, 2017|Biology|

Mosquitoes bite people: A mosquito on human skin Like bees, mosquitoes evolved from earlier flies and dragonflies about 200 million years ago, during the Jurassic period. Mosquitoes have six legs like other insects. Also like bees, mosquitoes evolved to eat pollen from the new flowers that appeared about this time. And like bees, mosquitoes [...]