Swine flu prevention mask circulation in market how far it is effective
and how much it is worthy using such mask.
advise any two manufacturer with WHO approval or at least certification

I am 56 F. Should i start using the surgeons mask from chennai airport or after i reach Brussels or in NY ? Should i use it throught the flight. If i feel uncomfortable with the mask – where and when can i remove to get some relief from the discomfort ? Is the mask required only in places where there is a congregation of people ?

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