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.
Malaria facts. 1  More than 198 million cases of malaria occurred worldwide in 2013. 2  The World Health Organization estimates that 600,000-800,000 people died of malaria in 2012; the vast majority are young children in sub-Saharan Africa.