The surgical face mask has become perhaps the most recognizable symbol of the H1N1 pandemic threat, but if the currently circulating flu virus does in fact reach full-fledged pandemic proportions, U.S.
Daily News Channel
The surgical face mask has become perhaps the most recognizable symbol of the H1N1 pandemic threat, but if the currently circulating flu virus does in fact reach full-fledged pandemic proportions, U.S.