Don't remember anything about malaria in that film.
Something does not pass the small test.
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before you throw stones at this excellent documentary on ivermectin, you might dig back into what you think you read that categorized ivermectin as a treatment for malaria?
hydroxychloroquine has been widely accepted as a treatment & prophylaxis for malaria (transmitted by mosquitos) for decades
otoh, "The origins of ivermectin as a human drug are inextricably linked with Onchocerciasis (or River Blindness), a chronic human filarial disease caused by infection with Onchocerca volvulus worms. The parasites are transmitted via the bite of infected blackflies of the genus Simulium, which breed in highly-oxygenated, fast-flowing rivers and watercourses. 1
so maybe you are relating malaria (HXc) to riverblindness (IVM)??
or possiblly the source where you read that association had it wrong?
footnote 1 source:
https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC3043740/
The bacteria, later christened Streptomyces avermectinius, was cultured in the 1970s by biochemist Satoshi Omura, who had been collecting soil samples all over Japan while hunting for new medicinal compounds. The sample would later be sent to Merck Research Laboratories, which struck a royalties agreement with Omura's Kitasato Institute. The pharmaceutical giant, at the time, was particularly interested in creating therapeutics for veterinary use.
Merck sat on the patents
Now the patents have expired and Ivermectin is manufactured as a low cost de-wormer.