South Korea has intensified efforts to contain the Middle East Respiratory Syndrome (MERS) virus that has now infected 87 people, and 2,300 have been quarantined.

With six fatalities now recorded, South Korea has launched a measure to keep MERS from further spreading to the populace by revealing the 24 health facilities where infections took place or MERS patients visited, according to Agence France Presse.

The South Korean government is now making amends after being criticized earlier that it has not taken the disease seriously that has led to an outbreak. 

Classes in more than 1,800 schools - mostly in Seoul and the surrounding Gyeonggi province - were closed by the education ministry on Monday.

An 80-year-old man from the city of Daejeon was the latest fatality, the publication reported citing official reports. South Korea now has the highest infection of the MERS second to Saudi Arabia, according to data from the European Center for Disease Control and Prevention.

Although the World Health Organization has not declared a travel ban, some neighboring Asian countries like Singapore and Japan have implemented some restrictions.

School trips scheduled from Singapore to Seoul had all been cancelled. Moreover, at Japan's Narita Airport, travelers from South Korea who might have been in contact with a MERS patient or had been in the hospital where MERS patients were treated are being asked to report to the quarantine office at the airport, according to ABC News.