Yellow fever kills 600 monkeys in Brazil’s Atlantic rainforest

Reuters

An outbreak of yellow fever has claimed the lives of more than 600 monkeys in Brazil’s Atlantic rain forest region, threatening the survival of rare South American primates, a zoologist said.  The monkeys, mostly brown howlers and masked titis, are falling out of trees and dying on the ground in the forests of Espirito Santo state in Brazil’s southeast.  “The number of dead monkeys increases every day,” said the zoologist, Sergio Lucena. “We now know that the rare buffy-headed marmoset is also threatened by the yellow fever virus and dying.”......To Read More.....

My Take - Extinction happens when a species becomes biologically incompetent.  Extinction has occured to over 95% of all the species that's ever lived.  Extinction is the rule - not the exception.