I’ve seen people on the 6 train and F trains now wearing masks to protect themselves from the swine flu. But my theory was that flue particles are so tiny that they can pervade any mask. I mean think about it, there literally is no preventing air from moving. . . unless you live in a vacuum.

Also, this article confirms my thoughts ^[1], sort of …

Federal health officials said Monday that they, quite frankly, didn’t know how helpful either type of devices are in preventing swine flu infection.

If used correctly, masks and — more likely — respirators may indeed reduce the risk of getting influenza, according to information released from the CDC. But for people who live in areas with confirmed cases, there is no single action that will provide complete protection. It simply isn’t practical to wear a mask all the time, and they are not 100% foolproof.

What are you doing to prevent swine flu?