A thermal camera monitor shows the body temperature of passengers arriving from overseas against possible infections of Ebola virus at the Incheon International Airport in Incheon, South Korea, Friday, Aug. 8, 2014. South Korea has been stepping up monitoring of its citizens returning from trips to West Africa and other areas affected by the deadly Ebola virus. Image Credit: AP

SEOUL, South Korea: South Korea reports 142 new cases of the virus, most in Daegu and nearby regions, bringing the total to 346.

Daegu saw the country's first coronavirus-related death.

It was the biggest jump in the number of cases in South, bringing the total to 346 cases of the virus, which causes COVID-19 disease.

Of those cases, about 70% have been linked to a Daegu branch of the Shincheonji Church of Jesus, where two recent services were attended by a previously confirmed patient.

'Patient Zero'

Little is known about the "patient zero" except that the woman in her early 60s had no recent record of overseas travel and was diagnosed with pneumonia last weekend.

She had initially resisted doctors' recommendations to get tested for the virus, according to the Korea Centers for Disease Control and Prevention.

Some 1,000 Shincheonji church followers who attended Sunday services with her have been quarantined at their homes while authorities screen them for the virus.

Health authorities are also trying to monitor thousands of others.