I believe we are dealing with a Plasmodium which is why the malaria drugs are working.
https://en.wikipedia.org/wiki/Plasmodium_falciparum
https://en.wikipedia.org/wiki/Toxoplasma_gondii
https://en.wikipedia.org/wiki/Malaria
These are not viral or bacterial but are unicellular protazoa which is why the Quinine based treatments work.
Will try to find more but need help digging through the wikis.
Flatten the curve ==Toxoplasma gondii after the curved shape of its infectious stage (Greek root 'toxon'= bow)