As swine flu or Mexican flu is on the rise in Thailand, I had this question. They say flu is most likely to spread in rainy or cold season, but that is not the case in Thailand. Why is it spreading so rapidly now?
Also, is everybody wearing masks there now?

The swine flu epidemic spread deeper into the United States, Europe and Latin America _ and in Canada, back to pigs. (May 4)

Apr 26 – Governments around the world rush to halt the spread of a new strain of flu.

Paul Chapman reports.