For example: giving out antibiotics like candy because you don't believe bacteria can evolve 'new' capabilities to detoxify them. Using tissue or proteins from less-closely related animals because you don't believe in the mammalian tree of common descent. Etc.
This is something of a current scandal in the UK, where we have created MRSA (methicillin-resistant or multiple antibiotic-resistant Staphylococcus aureus) super bugs in our hospitals responsible for circa 100,000 human infections annually, of which about 5,000 are fatal.
But in this case, it isn't for want of understanding Evolution, more to do with the bloody socialists running the NHS!
Mighty flimsy strawmen: do I have to???