Malaria n. : Air infected with some noxious substance capable of engendering disease; esp., an unhealthy exhalation from certain soils, as marshy or wet lands, producing fevers; miasma.

Malaria n. : A morbid condition produced by exhalations from decaying vegetable matter in contact with moisture, giving rise to fever and ague and many other symptoms characterized by their tendency to recur at definite and usually uniform intervals.

Example:
What happened to Malaria in the American colonies?

Taxonomy
malaria, parasite, disease, malaria parasites, vaccine, infection, infected, resistance, mosquitoes, drugs, red blood cells, mosquito, P. falciparum, blood, treatment, humans, severe malaria, endemic areas.

Defination from the web:
... Malaria is a vector-borne infectious disease caused by a eukaryotic protist of the genus Plasmodium. ...