Fair point. I assumed that if there was an HIV/Hep B-C scare, it was because he was positive for these, but you are right that that the article doesn't state that. I guess I would have expected that if the hospital knew he wasn't positive for these, the letter would have been more downplayed just saying "possible exposure to communicable diseases". But I'm not a lawyer, so I could be way off base.
I did find this other article that states that the hospital has not said whether or not he was positive/negative (indeed, because of privacy laws they really can't say.....but if he was negative, wouldn't the pharmacist be speaking out in his own defense?) This article does say that the pharmacist has had his licensed suspended in 1995 over alcoholism and lost his license in 2002 over stealing opoids (as well as being disciplined "several times in Pennsylvania" article doesn't say why.) I very much support giving people 2nd chances, but it seems like he blew his 2nd, 3rd, 4th chances long before this newest lapse.
http://www.nj.com/atlantic/index.ssf/2016/02/possible_hiv_hepatitis_infection_at_hospital_what.html