The North Korean regime has declared a quarantine for the Pyongyang area in frantic efforts to prevent the spread of measles, a source said Monday.

The source said measles broke out in the capital in early June, and since then travel has been controlled and preventive measures have been put in place.

The regime has reportedly instructed factories, enterprises, schools and village offices to keep those with symptoms at home.

It is also blocking traffic between Pyongyang and the provinces and issuing travel permits only to those with vaccination certificates.

Due to a lack of vaccines, the North is merely putting the breakout areas off-limits instead of treating patients. Radio Free Asia last week reported that measles has also broken out in Yongchon, North Pyongan Province on the Chinese border.

