All passengers from the Republic of Korea (RoK) are required to fill out health declaration forms when entering Vietnam via Hanoi-based Noi Bai International Airport as from June 3 as a precaution after the RoK has reported several cases of the deadly Middle East Respiratory Syndrome (MERS-CoV).

Noi Bai Airport caters for about 10 flights from the RoK and the Middle East every day with each carrying some 200 passengers.

Passengers from the Middle East have been required to fill out medical declaration forms and have their body temperature checked at Noi Bai since June last year.

The Ministry of Health said MERS-CoV has so far spread to 26 countries with 1,154 patients, 434 of whom have died. In Asia, four countries have recorded MERS-CoV cases: the Philippines, Malaysia, the RoK, and China.

Vietnam has stepped up drastic prevention measures recently due to the rapid spreading of MERS-CoV.

MERS-CoV, first reported in Saudi Arabia in 2012, belongs to a family of corona viruses that include SARS, which haunted Asia in 2003.

The disease can spread between people and causes fevers, breathing problems, pneumonia and kidney failure. The death rate of people confirmed to have the virus infection is about 51 percent. No vaccine is currently available.-VNA