https://en.wikipedia.org/wiki/Toxoplasma_gondii
https://en.wikipedia.org/wiki/Toxoplasmosis
https://en.wikipedia.org/wiki/Plasmodium_falciparum
https://en.wikipedia.org/wiki/Malaria
and more look around the wikis.
But yet her mercy was above her heat;
She did not, as a many silken men
Call'd by much wealth, small wit, to judgment's seat,
Condemn at random; but she pitied then
When she might spoil: would great ones would do so!
Who often kill before the cause they know.