Measles Outbreak: Cases Reach Highest Level in More Than 25 Years

The Centers for Disease Control and Prevention said Thursday that there had been 971 known cases of measles in the United States so far this year.That is eight more cases than in 1992, the previous high since vaccines became widely used, when 963 cases were reported in the United States all year. Read more »

Measles Outbreak Infects 695, Highest Number Since 2000

The vaccine is considered very safe, and two doses are about 97 percent effective at conferring immunity.CreditCreditAlisha Jucevic for The New York TimesThe number of measles cases in the United States has risen to 695, the highest annual number recorded since the disease was declared eliminated in this country in 2000, federal health officials said on Wednesday. Read more »