S Korea reports three additional MERS cases

South Korea confirmed three more MERS cases today, bringing the total number of patients infected with the potentially deadly virus to 10, including a man who defied a quarantine protocol and travelled to China, health officials said.
The infections were all traced to the original case of a 68-year-old man diagnosed on May 20 after returning from a trip to Saudi Arabia.
Middle East Respiratory Syndrome (MERS) is considered a deadlier but less infectious cousin of the Severe Acute Respiratory Syndrome (SARS) virus that appeared in Asia in 2003 and killed hundreds of people, mostly in China.
Symptoms may range from flu-like aches and pains to pneumonia and kidney failure.

The health ministry said the new MERS cases included a 30-year-old nurse from the hospital where the original case was reported, and a 56-year-old man who was treated there for other diseases.
A 44-year-old man who left for China on a business trip on Tuesday, a day after his father was diagnosed with the virus, was confirmed today to have been infected, it said.

The man ignored a warning from doctors advising against travel and is now at a hospital in China. A list of 45 people, including colleagues and passengers who had sat close to him on the China-bound flight, has been drawn up.

South Korea's second largest flag carrier, Asiana Airlines, remains on alert as the man used one of its flights, Yonhap news agency said, adding six crew members had been put in isolation.
Health officials said more than 120 people were being monitored after they were exposed directly or indirectly to the original patient.
More than 20 countries have been affected by the virus, with most cases in Saudi Arabia where more than 400 have been killed since 2012.