"It was malaria"

Malaria Symptoms
Public DomainMalaria Symptoms - Credit: Mikael Häggström
 Malaria is a mosquito-borne infectious disease of humans and other animals caused by eukaryotic protists of the genus Plasmodium.

The disease results from the multiplication of Plasmodium parasites within red blood cells, causing symptoms that typically include fever and headache, in severe cases progressing to coma or death. It is widespread in tropical and subtropical regions, including much of sub-Saharan Africa, Asia, and the Americas.