Malaysia today confirmed its second case of A(H1N1) flu - a female student who was on the same flight as a 21-year-old man whom authorities a day earlier announced had tested positive.

swine flu pandemic thermal scanner image 150509 "Malaysia has a second case of the A(H1N1) influenza, which was confirmed by the Institute of Medical Research this morning," Health Ministry's deputy-director general Ramlee Rahmat told reporters.

"She is a student. She was on the same flight as the first case (and) she is a friend of the first case," he added.

"She was admitted to the Penang hospital yesterday. She is in a stable condition and her fever has subsided."

Ramlee said the student's family had been placed in home quarantine but were healthy.

Five family members who live with the 21-year-old man, the first confirmed case on Friday, were previously placed under home quarantine.

Calling all those on flight MH091

Officials have urged people not to be alarmed amid fears that more people have been exposed to the disease.

swine flu outbreak 130509 04 The government has urged all passengers who travelled on the same Malaysian Airlines flight as the two infected people to contact the ministry.

Ramlee said that there were 192 passengers and 15 crew members on Malaysian Airlines flight MH091 from Newark in the United States to Kuala Lumpur that arrived on May 13.

It was not a code-sharing flight (with Indonesian carrier Garuda) as announced yesterday , he said.

"We are prepared to handle an outbreak. It is good that we have discovered the two cases," Ramlee said.

Later today, the Perak Health Department has quarantined four

people including an American tourist, who had travelled on the same flight as the two patients.

According to Bernama , the American tourist had been quarantined at the Raja Permaisuri Bainun Hospital in Ipoh, while the three local residents were undergoing quarantine at home.

"Three family members, a maid and two health department personnel who also had contact history with the four people have also been told to undergo quarantine at home," said State Health, Local Government, Consumer Affairs, Environment and Public

Transportation Committee chairman Mah Hang Soon.

The health authorities have installed 20 thermal scanners at the country's entry points to help detect possible cases of the virus.

The latest WHO data showed 7,520 people in 34 countries were confirmed to have caught the A(H1N1) virus.