Candida auris, a fungus that causes sometimes deadly infections, can stick to almost any surface. In hospitals, “it’s very tenacious, very difficult to get rid of and ends up on all the surfaces around patients,” where it can fuel outbreaks, says Darian Santana, a microbiologist at the University of Michigan Medical School in Ann Arbor. The fungus has been spreading rapidly since cases first emerged in several locations around the world in 2012 …