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An adult female Anopheles mosquito bites a human body to begin its blood meal at Tehatta, West Bengal, India on February 24, 2023. Part of the genus Anopheles, the mosquitoes are capable of carrying and transmitting one of the five single-celled parasite species that cause malaria. Researchers looked at a dataset spanning from 1898 to 2016 and found malaria-carrying Anopheles mosquitoes' territory grew southward by an average of about 310 miles during that 118-year time span. According to WHO's latest World malaria report, there were an estimated 241 million malaria cases and 627 000 malaria deaths worldwide in 2020. (Photo by Soumyabrata Roy/NurPhoto via Getty Images)
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