When it comes to herpes, you can run, but you can’t hide. The virus has long been well-established here on earth—north of 3 billion people have it, according to the World Health Organization—but it’s now in the spotlight elsewhere: in space. Yes, space herpes is now a thing: A new Frontiers in Microbiology report warns that the herpes virus is likely to reactivate in astronauts on spaceflights both long and short. A team of NASA-funded researchers discovered this by collecting urine and saliva samples from astronauts. They found that 53% of astronauts on spaceflights between 10 and 16 days and 61% of those on missions 180 days or longer were shedding at least one herpes virus. In some cases, the astronauts had skin lesions or atopic dermatitis, an itchy, red rash.