Mosquitoes are one of the most annoying bugs on this planet, but they are also one of the most deadly. Why are they so good at carrying diseases?
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Malaria Infected Mosquitoes Express Enhanced Attraction to Human Odor
“There is much evidence that some pathogens manipulate the behaviour of their mosquito hosts to enhance pathogen transmission. However, it is unknown whether this phenomenon exists in the interaction of Anopheles gambiae sensu stricto with the malaria parasite, Plasmodium falciparum – one of the most important interactions in the context of humanity, with malaria causing over 200 million human cases and over 770 thousand deaths each year.”
Why vector mosquitoes don’t get affected by the viruses/plasmodium they transmit?
“In most cases of biological/obligatory transmission, there is a mutualistic or a symbiotic relationship of some kind between insect vectors and transmitted pathogens, which usually indicates a long evolutionary relationship. In a few cases however, the pathogen affects the vector negatively but not in a very serious way since in many cases the vector is the only way for pathogen transmission in nature.”
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