In this case the fungus Candida Aurias is extremely common (grows on most crops) and has become resistant to a common fungicide that is used on an industrial scale.
This poses a universal danger to immature or weakend immune systems. I am reminded of "the meek shall inherit the 'germs in dirt'".

The microbiome never sleeps. All my kids got the E Coli varient 109 this week but while painful it's not life theatening like the thousand Africans currenly with Ebola. Jeri's right that while mutation is an aspect of evolution it is not evolution per se, but it is survival of the fittest germ.