First presumptive case of monkeypox detected in Colorado. Here’s what we know.

“People are most infectious when they have the rash itself,” said Michelle Barron, medical director of infection control and prevention at UCHealth University of Colorado Hospital [and professor of medicine at CU School of Medicine]. “If you come into contact with that rash, it doesn’t mean you’re necessarily going to get infected, but your risk is highest when the vesicles are there until they scab and completely fall off.”