On August 20, 1897, the British army physician Ronald Ross, working in India, found malaria parasites developing inside the gut of a mosquito that had fed on an infected patient, and the following year he traced the complete cycle of the parasite through a bird malaria model, establishing that mosquitoes are the vector by which malaria passes from one host to another. The finding overturned earlier theories that blamed bad air or direct contact for the disease's spread and gave public health authorities their first real basis for controlling malaria by attacking mosquito populations rather than the parasite alone. Ross received the Nobel Prize in Physiology or Medicine in 1902 for this work.
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1. Ronald Ross (Wikipedia)
WikipediaBiography, 20 August 1897 confirmation
On 20 August he confirmed the presence of the malarial parasite inside the gut of mosquito, which he originally identified as "dappled-wings".
entity description, Discovery of Malaria Transmission by Mosquitoes
On August 20, 1897, the British army physician Ronald Ross, working in India, found malaria parasites developing inside the gut of a mosquito that had fed on an infected patient, and the following year he traced the complete cycle of the parasite through a bird malaria model, establishing that mosquitoes are the vector by which malaria passes from one host to another.
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