Born Before 1989 May Need Another Measles Vaccine

[JAB]

Nowadays, children get two doses of the combination measles, mumps,
and rubella, or MMR, vaccine starting at the age of one. But as
recently as the 1980s, people in the U.S. and elsewhere were only
given one shot. It was only in 1989, following a series of outbreaks,
that public health experts in the U.S. endorsed a two-dose MMR
schedule. The MMR vaccine, like so many, isn’t perfectly effective
against measles even with two shots (97 percent effective), but it’s
still better than one shot (93 effective).

That doesn’t necessarily mean everyone born before 1989 should
immediately rush out and get vaccinated with MMR again. The Centers
for Disease Control and Prevention only recommends, for instance, that
people who were vaccinated between 1963 to 1967 with a killed virus
vaccine get a shot of the current MMR vaccine, since that older
version wasn’t very effective. The CDC also recommends that adults who
are somehow still unvaccinated get at least one shot’s worth of
protection.

https://gizmodo.com/people-born-before-1989-may-need-another-measles-vaccin-1834304231