'Immunity can wear off over time'

CBC) Vaccinations are commonly considered a childhood health issue, but if adults think they’re protected, doctors say that’s not always the case. Some adults may need a vaccination booster for highly contagious infectious diseases like measles.

Amid travel-related measles cases in British Columbia’s Lower Mainland, New York City, New Jersey, California, Michigan, Washington state, as well as outbreaks in Africa, Asia, Europe and South America, some doctors are raising awareness about adults who may be inadvertently undervaccinated.

Many people are unaware that their immunity can wear off over time. People born in Canada between 1970 and 1996 may need an extra dose of the vaccine to protect themselves — particularly if they are planning to travel abroad.

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