Grown-ups born among 1957 and the mid 1970s who were inoculated against the measles as youngsters may should be immunized once more.

Measles immunizations given in the late ’50s to mid ’70s weren’t as successful as the antibody given today, Dr. Roy Buchinsky, of University Hospitals in Beachwood, Ohio, told WOIO-TV.

“So, we now recommend to people that are traveling abroad that are born in this time period of ’57 to early ’70s that they should be revaccinated when traveling overseas to areas that may have more measles,” Buchinsky said.

Those traveling to areas where there has been an ongoing measles flare-up ought to likewise consider getting revaccinated, WOIO-TV revealed. A “flare-up” is characterized as at least three instances of an infection, the news station detailed. So far in 2019 there have been three flare-ups of the measles in New York state, and a flare-up in Washington state, Texas and Illinois.