Across the U.S., there are 1,024 confirmed measles cases as of Friday. Texas still accounts for the vast majority of cases. There are three other major outbreaks in North America.

Texas added just 10 new cases this week, but there must be no new cases over a 42-day period before an outbreak is declared over.

Since the outbreak began in January in Gaines County, located in West Texas along the state border with New Mexico, 738 cases of measles have been confirmed.