“The magazine did find one scientist whose decidedly minority views turned out to be correct. William Haseltine, then a pathologist at Harvard University, argued that the virus was fast becoming a heterosexual disease. “To think that we’re so different from people in the Congo is a nice, comfortable position, but it probably isn’t so,” Haseltine told Discover. “It’s heterosexual promiscuity. The more lovers, the better the chance of being infected.”
https://www.discovermagazine.com/health/20-years-ago-in-discover-misunderstanding-aids
He was referring to AIDS.