@pbsnews: The U.S. was once a global leader in its ability to contain measles. But the virus is surging back. Measles is prevented with the MMR vaccine, which protects against measles, mumps and rubella. Over years of study, the MMR vaccine has proven to be a safe, effective and lifesaving intervention. While a majority of Americans still believe in the safety and effectiveness of vaccines, a small but growing number of them are turning away from those tools. Officially, the U.S. has seen almost 7,500 measles cases since January of last year. But many believe that number is a vast undercount. “This is a virus that is extremely contagious,” Dr. William Schaffner, a professor of preventive medicine at Vanderbilt University, told Horizons host William Brangham. “Obviously, that’s why we want to vaccinate everyone.” Horizons from PBS News dives into the science, health, technology and environmental issues making headlines each week. Visit the PBS News website to watch this week’s episode. #horizons #Science #measles #measlesoutbreak #pbs #pbsnews

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Saturday 14 November 2026 17:00:00 GMT