Travel Do You Need A Measles Booster Shot When Traveling Internationally? by joeheg August 31, 2024 by joeheg August 31, 2024 Before the measles vaccine was introduced in the 1960s, it’s estimated that 3 to 4 million people in the U.S. contracted the disease every year, of which 500,000 cases were … 0 FacebookTwitterPinterestEmail