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This picture taken on June 7, 2015 shows medical workers caring for a MERS patient at Konyang University Hospital in Daejeon, south of 140 km south of Seoul. South Korea recorded its sixth death and biggest single day jump in Middle East Respiratory Syndrome (MERS) infections on June 8, with 23 new cases in the largest outbreak of the potentially deadly virus outside Saudi Arabia. REPUBLIC OF KOREA OUT NO ARCHIVES RESTRICTED TO SUBSCRIPTION USE AFP PHOTO / YONHAPYONHAP/AFP/Getty Images
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This picture taken on June 7, 2015 shows medical workers caring for a MERS patient at Konyang University Hospital in Daejeon, south of 140 km south of Seoul. South Korea recorded its sixth death and biggest single day jump in Middle East Respiratory Syndrome (MERS) infections on June 8, with 23 new cases in the largest outbreak of the potentially deadly virus outside Saudi Arabia. REPUBLIC OF KOREA OUT NO ARCHIVES RESTRICTED TO SUBSCRIPTION USE AFP PHOTO / YONHAPYONHAP/AFP/Getty Images
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GOYANG, SOUTH KOREA - JUNE 09: Disinfection workers wearing protective gears spray anti-septic solution in an subway amid rising public concerns over the spread of MERS virus at Seoul metro railway base on June 9, 2015 in Goyang, South Korea. South Korea has reported eighth death, 2,892 quarantined, and 1800 schools closed as of June 9, 2015. (Photo by Chung Sung-Jun/Getty Images)
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First MERS case reported in the U.S.

Story highlights

NEW: South Korea has 87 cases of MERS and six deaths

A South Korean air force member has MERS at a U.S. air base there

Seoul, South Korea CNN —  

Fears of MERS in South Korea are growing by the day, with more than 2,300 people quarantined as the country grapples with the outbreak.

More than 1,800 schools will be closed for several days amid concerns of the spread of Middle East respiratory syndrome. They include at least 1,255 schools in Gyeonggi province, the area outside Seoul where the outbreak started and where a South Korean air force member stationed at a U.S. air base has been isolated with the illness.

Other closed schools are in the Gangnam region, near the Samsung Seoul hospital – the most affected hospital in the city.

In total, 87 people have contracted the virus, and six people have died, according to official numbers.

Potential exposure through doctor

South Korea’s capital has asked more than 1,500 people to self-quarantine because they unknowingly attended a symposium with a doctor who was infected with MERS, Seoul’s mayor said.

Mayor Park Won-soon said all 1,565 people who attended the symposium should stay at home as a precaution to avoid spreading MERS in the unlikely event they contracted it at the meeting.

The mayor said the city is considering measures that would force these people to stay at home, and that officials are trying to determine where else the doctor traveled while he had symptoms.

Kang Shin-myun, Seoul chief of police, said it will enforce quarantine orders for those suspected of having MERS.

“We will deal strongly with anyone who escalates unnecessary sense of public uneasiness,” he said.

Air force member infected

A Korean Air Force member stationed at a U.S. air base in South Korea tested positive for MERS earlier this week and remains in isolation at a military hospital on the base, a Korean Department of Defense official said.

The sergeant had received treatment for his Achilles heel at the same hospital as the first MERS patient in Korea, who became sick after visiting four Middle Eastern countries.

There are no other diagnosed cases of MERS on base, according to a statement released by Osan Air Base on Thursday. But six civilians and 64 soldiers – all Koreans – remain under quarantine in their barracks to prevent further infection on the base.

MERS doesn’t transmit easily

The syndrome, which surfaced only three years ago, is not well understood. Because the virus is still fairly new, doctors and scientists do not know the exact source or mode of MERS transmission.

Steps to prevent MERS

  • Wash your hands often with soap and water for at least 20 seconds. Use an alcohol-based hand sanitizer if soap and water are not available. Cover your nose and mouth with a tissue when you cough or sneeze, then dispose of the tissue.Avoid touching your eyes, nose and mouth with unwashed hands.Avoid personal contact, such as kissing, or sharing cups or eating utensils, with sick people.Clean and disinfect frequently touched surfaces and objects, such as doorknobs.
  • Source: CDC

The South Korean outbreak, which had its first case on May 20, involved 64 confirmed cases and five deaths as of Saturday evening, the country’s health ministry said. The vast majority of the cases are hospital clusters and the deaths were among people with pre-existing health conditions.

The South Korean outbreak had its first case on May 20. The vast majority of the cases are hospital clusters, and the deaths were among people with pre-existing health conditions.

Experts from the World Health Organization who have dealt with MERS are coming to South Korea to assess the pattern of the virus spread and to look at public health response efforts.

5 things to know about MERS

The outbreak in South Korea has been the largest outside of Saudi Arabia – where the virus was discovered.

As of June 3, 1,179 cases of MERS have been confirmed in 25 countries, according to the World Health Organization. Two of those cases were in the United States – both were health workers who lived in Saudi Arabia.

CNN’s Jung-eun Kim, Tina Burnside and Madison Park contributed to this report.