SINGAPORE confirmed three more cases of Influenza A (H1N1) on Tuesday, bringing the reported cases so far to 18.

The first two cases had returned from Melbourne, while the third was back from Manila. All three have relatively mild symptoms and their conditions are stable.

The 16th case is a 40-year-old man from India who is working in Singapore. He went to Melbourne on May 31 on a business trip and returned to Singapore on Singapore Airlines SQ238 at 4.05pm last Saturday. He was seated at row 45.

On Sunday morning, he developed symptoms and sought medical attention on Tuesday noon at a private hospital. He was sent to Tan Tock Seng Hospital's (TTSH) emergency department via a 993 ambulance, and was admitted to the Communicable Disease Centre (CDC) in the afternoon. Laboratory results confirmed his infection on Monday night.

The 17th case is a 25-year-old Malaysian woman who went to Melbourne for a holiday on May 21. She developed symptoms on June 5 while she was there. She returned to Singapore on Emirates EK405 on Sunday night and was not picked up by the thermal scanner as she did not have fever then.

She was seated at row 32. She went home by taxi from the airport.

On Monday, she consulted a GP in the late morning for a non-flu related medical condition. She was then referred to TTSH via a 993 ambulance and admitted to CDC. Laboratory results confirmed her infection on Monday night.

The 18th case is a 36-year-old Filipino female who works in Singapore. She returned to Singapore from Manila on Philippine Airlines PR501 at 6.35pm on June 8.

She was seated at row 6.

She was admitted to CDC for further assessment the next day, and laboratory results subsequently confirmed her infection.

Passengers within rows 43 to 47 on SQ238 on June 6, rows 30 to 34 on EK405 on June 7, and rows 4 to 8 on PR501 on June 8, who have not been contacted by MOH yet should call its hotline at 1800-333 9999.

All close contacts identified will be quarantined and given antivirals.