The CDC says the diagnosed cases of measles continues to climb, as 33 new cases this week pushed the country’s total to 1,077 with no end in sight.

The outbreaks are connected to travelers who infected people in those communities after bringing measles back from other countries facing outbreaks likes Israel, Ukraine, and the Philippines.

Most of the people infected in the United States were unvaccinated, according to the CDC.

Outbreaks, which are defined as three or more measles cases, are occurring in Rockland County, NY, New York City; Michigan; Butte, Los Angeles and Sacramento counties, Calif.; Georgia; Maryland; Pennsylvania and Washington.