The number of new U.S. measles cases continued to accelerate last week as health authorities race to curb the outbreaks and scientists who study the virus say measles may be more harmful than once believed. There have been 555 cases of measles in 20 states across the U.S. this year as of April 11, the Centers for Disease Control and Prevention reported Monday, 90 more than were reported the previous week.

Source: Wall Street Journal April 15, 2019 14:09 UTC