@CStamp@mastodon.social Pretty sure as well that active shingles can infect those who don't have existing immunity, as well as potentially activating it in others. Also it sucks ass no matter what age, but adults seem to be more prone to the really nasty effects like nerve pain. (And you'd be surprised at how many people aren't immune and aren't vaccinated, despite being high risk. Mostly because no matter how much evidence you have that you are definitely not immune and how much risk you're at, if you're under a certain fairly high age (usually 50 or 65) in many jurisdictions, you're not considered at risk enough so the vaccine is e x p e n s i v e. It's also surprising how many adults aren't immune. Some because their parents didn't think that childhood illness was normal or a good thing, some because they were isolated as kids, some because... who knows? My SO has never had it, despite repeated exposures as a child, and I don't think it's possible to be asymptomatic. She doesn't want to test it, but... not old enough to get the vaccine for a reasonable price.)