Resident with STD

The other day i was at my lunch break with several other cnas. I was telling one of them how much of a monster one of the residents is she then told me that this resident had herpes and to wear gloves when ever I took care of her. Later that day I asked the Rn if it was true and she looked me in the eye and said no so that was that. A couple days later I was mentioning to her that I had applied to the nursing program at my school and for some reason I was nervous about doing care plans so she told me I should go through some of the resident's charts and check some out. So there i am going through the monsters chart and there it says along with some other conditions genital herpes. So my question is did she have the right to lie to me. Oh by the way i told all the other cnas on the unit about the monsters little problem.