Prestige Ameritech employee Saengdara Phanvilay, pictured during the 2009 swine flu outbreak, inspects a machine that produces disposable surgical masks.

RICHLAND HILLS, TEXAS – MAY 3: Prestige Ameritech employee Saengdara Phanvilay inspects a machine that produces Encompass ProGear disposable surgical masks May 3, 2009 in Richland Hills, Texas. The Texas based company has increased production of the masks from two shifts working five days a week to 24 hours a day, seven days a week due to increased demand from the recent swine flu outbreak. (Photo by Tom Pennington/Getty Images)