major risk(The high probability that a given hazard or situation will yield a significant amount of lives lost, persons injured, damage to property , disruption of economic activity or harm to the environment; or any product of the probability of occurrence and the expected magnitude of damage beyond a maximum acceptable level)
malaria(A group of human febrile diseases with a chronic relapsing course caused by hemosporidian blood parasites of the genus Plasmodium, transmitted by the bite of Anopheles mosquito)