Malaria can definitely be caused by a parasite. It’s a mosquito-borne disease, which can infect through either bacteria, virus or parasite.
(At least, according to Wiki):
https://en.wikipedia.org/wiki/Malaria
https://en.wikipedia.org/wiki/Mosquito-borne_disease
Maybe this is a good place to add this information...
No one here has mentioned it, but the herb wormwood is a powerful anti parasite treatment and is used in China for malaria.
“ Artemisinin is a natural product derived from the Chinese herb Artemisia annua (figure 1). During the Vietnam War, Ho Chi Minh asked Mao Zedong for help, because more North Vietnamese soldiers were dying from malaria than from armed conflicts. The Chinese government launched a program to find new antimalarial drugs. As a result, Tu Youyou, a Chinese scientist from the Chinese Academy of Traditional Chinese Medicine (Beijing, China), identified artemisinin as the active compound of A. annua in 1972 [1]. Its overwhelming antimalarial activity was demonstrated in numerous clinical studies by Chinese and Western scientists. Despite this success, the true potential of artemisinin was underestimated in the Western world for many years [2]. In the meantime, the World Health Organization officially recommends artemisinin and its derivatives, such as artesunate and artemether, for the treatment of malaria, particularly as a part of combination therapies with other antimalarial drugs.”