Can coworkers talk about their own health statuses to each other?

I know it’s a super dumb question but my office manager and boss wanted us to take at home Covid tests today. I told all of my coworkers that mine was negative and some have told me they are too. We can’t get in trouble at work for that, right? My workplace is closed today so we’re all doing at home tests. Also, can somebody link me some info on HIPAA laws amongst coworkers and also boss/manager? Thank you!!!