What could cause a malaria comeback in the US -- and what could stop it

[Jilly_in_VA]

Over the last month, five people in the US (four in Florida and one in Texas) have acquired malaria within the country’s borders. That’s pretty uncommon — at least, in this century; until the 1950s, malaria was a persistent plague in the US, especially in the Southeast.

Many of the conditions that favor malaria’s spread haven’t changed much since then. The Anopheles mosquitoes that spread malaria still thrive in many parts of the country, and states that receive high numbers of travelers from countries where malaria is endemic still have warm, wet weather that favors mosquito reproduction.

Nevertheless, it’s extraordinarily rare for American mosquitoes to be infected with malaria. Since the turn of the last century, there have been only about a dozen cases of local malaria transmission in the US. But the disease remains a major force of destruction elsewhere in the world: In 85 countries across Africa and parts of Asia and South America, malaria caused 240 million illnesses and 627,000 deaths in 2020 alone.

The last spate of local malaria transmission in the US took place 20 years ago. Now circumstances are different: These cases are happening amid rising rates of other insect-borne infections nationwide, and smack in the middle of a heat and wildfire wave that together make climate change’s health risks undeniable. It’s reasonable to wonder whether the US is at risk for becoming a malaria hot spot again.

“Something would have to go seriously wrong for malaria to become endemic in the United States,” said Colin Carlson, a global change biologist at Georgetown University’s Center for Global Health Science and Security who has led research on the rapidly expanding reach of malaria-spreading mosquitoes in Africa.

It’s perhaps the understatement of the year to say the nation is not immune to “things going seriously wrong.” Recent history, ahem, has shown that the country’s public health infrastructure, which Americans rely on to catch and contain invasive infectious diseases, is far more fragile than many realized.

https://www.vox.com/2023/7/4/23778786/malaria-us-florida-texas-climate-change-travel-resurgence-comeback

[Rebl2]

1. I took a

drug for rheumatoid arthritis for 30 years that was actually made to treat malaria. That drug-wait for it-was hydroxychloroquine. I quit taking it several years ago because it started to effect my vision.