A sixth person in South Korea has died from Middle East Respiratory Syndrome, also known as MERS. The country’s Health Ministry announced the death on Monday. It said the victim was an 80-year-old man who was being treated for pneumonia. He died at a hospital in Daecheong. The ministry says 87 people have been infected with the disease in South Korea.

Almost 2,000 schools have been closed in South Korea in an effort to stop the virus from spreading. The government said it is also increasing medical exams of people who are barred from leaving home because they may have been infected.

There is no cure or vaccine for MERS. It was first reported in Saudi Arabia in 2012 and has spread to several other countries.