The influenza A/H1N1 cases have risen to four in Myanmar as a 22-year-old woman has been confirmed with the infection in the country, the official newspaper New Light of Myanmar reported on Friday.

The woman arrived back in Yangon from Thailand last weekend by a Thai Airways flight and was admitted to hospital after falling ill.

The patient's four family members are under quarantine and monitoring, the report said.

The woman was on the same flight of the third patient, a 51-year-old man.

Myanmar reported its first case of flu A/H1N1 on June 27, which involved a 13-year-old girl who came back from Singapore.

The girl has recovered and been discharged from hospital and the second patient will be discharged from hospital soon, according to the report.

So far, the authorities have given medical check up to over 2 million people at airports, ports and border check points and examined those suspicious of having contracted the disease since the outbreak in Mexico on April 28, the report said.

Of the over 15,000 people with symptoms of fever and suspected flu, 6,184 have been free from surveillance after 10 days' period of monitoring and a total of 8,825 people remain under surveillance.

The authorities continue to take preventive measures against the possible spread of the global human flu pandemic, advising all private clinics in the country to report or transfer all flu-suspected patients, who returned from abroad, to local state-run hospitals or health departments for increased surveillance.

(Xinhua News Agency July 17, 2009)