The observed or calculated probability of the occurrence of an event, Xâe.g., toxic exposure, infection, etc.âin a population relative to its exposure to a specific hazard or pathogen. Absolute risk is risk stated without any context whatsoever.
Malaria is a serious infection. It is common in tropical countries such as parts of Africa, Asia and South America. Malaria is a disease caused by a parasite called Plasmodium that lives in mosquitoes.
There are many different types of plasmodium parasite, but only five types cause malaria in humans. These are: 1  Plasmodium falciparum â mainly found in Africa, it is the most common type of malaria parasite and is responsible for most malaria deaths worldwide. 2  Plasmodium vivax â mainly found in Asia and South America.