How to make your own anti-flu protective mask: Part I

On Saturday morning, about ten percent of the crowd at the local Sumesa was wearing face masks. Now, Monday afternoon, I'd say the proportion has jumped to 80. The streets of Mexico City are filled with blue- or green-masked folks, all attempting to outwit the wily H1N1 virus, also known as swine flu.

But are masks that seem little more than colorful five-ply Kleenex really up to the job? This morning on my personal blog I posted in detail about filters, and if one might be able to make an effective face mask for protecting against the flu.

I'm about to start the experiment to make my own mask and will post the full results here. In the meantime, scientists out there: what is the best way for people worried about airborne transmission of the virus from one person to another to protect themselves?

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