Because vaccines work
@deborahh @infobeautiful @wiebepaul
yeah, that's news to me... but it was introduced widely in the US in 1995, and has been available since the early 1980s.
@deborahh @pete @infobeautiful @wiebepaul what actually happened was, olds weren't getting exposed to chicken pox from their grands on the regular anymore, so their immunity waned leaving them vulnerable to shingles
That's why some countries decided not to vaccinate kids against chicken pox
Americans were holding "pox parties" to deliberately expose the kids to the chicken pox, though, and the authorities thought that was gross. So that's a big part of the reason why we vaccinate the kids