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.
More than half of the Malaria cases in African nations in 2006 occurred in Nigeria, Democratic Republic of Congo, Ethiopia, Tanzania and Kenya, the WHO said and added that there were an estimated 247 million malaria cases in the year.