South Korea looks to be finally approaching an end to its spread of Middle East respiratory syndrome as it reported no additional cases for the 21st consecutive day on Sunday, with the number of patients remaining unchanged at 186.

No additional fatalities from the disease were reported for the past 14 days, leaving the country’s death toll unchanged at 36, the Ministry of Health and Welfare said.

Of the 186 people who have contracted the disease, 12 are still being treated while the remaining 138 have been discharged after full recoveries. Of the 12, three are currently in unstable condition.

As of Sunday, only one person remained in isolation as a suspected case and was scheduled to be released from isolation at midnight.

Nearly 16,700 people were on isolated watch for possible infection since the country’s first case on May 20.

The authorities are expected to declare the “de facto” end to the MERS outbreak this week when the number of people on isolated watch reaches zero.