Ajit Varki, a biologist at the University of California, San Diego, argues that the awareness of mortality on its own would have led evolution to a dead end.
South Africa has again re-introduced DDT for indoor residual spraying to keep malaria case and fatality Numbers at all-time low levels and move towards malaria elimination.
Because this population is getting larger, the number of deaths in this group is also increasing—18,434 centenarians died in 2000, whereas 25,914 died in 2014.
Thus, for the sake of stimulating survival awareness, and furthermore, proving the essence of survival, death philosophy attempts to waken man's feelings about death.
Meanwhile, the deadliest strains of the virus perished with their hosts as natural selection favored strains that could infect hosts but not kill them.