While speaking with Journal of the American Medical Association editor Howard Bauchner Wednesday, Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases (NIAID), said that because the virus doesn’t seem to be mutating much, it’s unlikely people will test positive a second time.

“Generally we know with infections like this, that at least for a reasonable period of time, you’re going to have antibodies that are going to be protective,” Fauci said.