After a 61-year-old man tested positive for MERS on Saturday after returning to Seoul from Kuwait,.... the South Korean government is working to make sure the virus doesn't spread.
Hong Yoo has the latest.
The deadly MERS virus that killed 38 people three years ago has returned to Seoul.
A man was diagnosed with the disease on Saturday after returning from Kuwait.

Worried that South Korea could see a repeat of the 2015 outbreak, the government is under emergency alert, trying to tackle the virus quickly and accurately to prevent it from spreading.

The government has assigned officials to monitor the 439 people that were on the same flight as the patient and check for any symptoms.

"This time the people on the same flight will be under active monitoring. They will not be isolated in their homes, but their designated officials will check their health every day."

Meanwhile, two other South Korean citizens took a medical examination in Kuwait.
One of them showed symptoms of MERS and is now under quarantine at a local hospital.
This person was working for the man in Seoul diagnosed with MERS.
The South Korean Minister of Health and Welfare said that Korean residents in Kuwait who have been in physical contact with the patient will be investigated, and that Seoul is working with the government of Kuwait, to take safety measures if anyone shows symptoms of MERS.
Hong Yoo, Arirang News.