Thailand Health Care officials and others gather for a news conference Friday, May 1, 2009, in Bangkok, Thailand. Bangkok has announced it will provide free masks to transportation officials and others to pass out to the general public as part of a campaign against the spread of swine influenza A/H1N1. At present there has been no cases of the virus in Thailand. (AP Photo/David Longstreath)

Tricycle taxi (Tuk Tuk) driver Chinapat Thorrat , 53, wears a face mask as he poses for photographers after a news conference at the Bangkok Metropolitan May 1, 2009. Southeast Asian health ministers will seek to coordinate their fight against influenza A (H1N1) virus, formerly referred to as swine flu, at an emergency meeting in Thailand next week, officials said on Thursday. The meeting of ministers from the 10-member Association of South East Asian Nations (ASEAN), scheduled for May 7-8, was called after the U.N. health agency warned a pandemic was imminent. (REUTERS/Chaiwat Subprasom)