A measles advisory is shown tacked to a bulletin board outside Gaines County Courthouse on April 09, 2025 in Seminole, Texas. Brandon Bell/Getty Images North America hide caption toggle caption Brandon Bell/Getty Images North America The Centers for Disease Control and Prevention reports there have been 1,001 confirmed measles cases in the U.S. this year. It\’s the second-highest case count in 25 years, topped only by 2019, when more than 1,200 measles cases were detected. The best way to contain measles is two doses of the MMR vaccine (measles, mumps and rubella). Here are numbers to help you understand how…