On Enterprise (the TV series) the Vulcan science officer T'pol catches a fatal disease spread by the "highly intimate" act of being the receptive partner in a mind meld. Both T'pol and the Vulcan doctors indicated that having this illness was a shameful disgrace, and that the mind melders were small a subculture of Vulcans, considered deviant for practicing unsafe telepathy and potentially sharing emotions.
There was little left to the imagination—the writers made it abundantly clear that this was a metaphor for HIV/AIDS.
However, if my memory serves, Spock relatively frequently engaged in mind melds in both the original TV series and the movies (?).
On Enterprise, they specified that while any Vulcan could receive a mind meld, only a small subset of Vulcans were born with the ability to be the penetrative partner in a meld.
Didn't Spock both give and receive melds?
Was Spock a part of this small group of outcasts or had all Vulcans starting giving and receiving melds by his era?
Did he catch the disease?