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Ann Intern Med. Surgical masks were noninferior to N95 respirators for preventing influenza in health care providers.

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  • #16
    Re: Ann Intern Med. Surgical masks were noninferior to N95 respirators for preventing influenza in health care providers.

    SINGAPORE, March 29 (UPI) -- Surgical masks may be as effective as N95 respirators in preventing hospital staff from catching H1N1, researchers in Singapore said.

    Study author Dr. Brenda Sze Peng Ang of the Tan Tock Seng Hospital in Singapore and colleagues analyzed the incidence of H1N1 among the hospital's healthcare workers.

    From June 19 to July 21, 2009, hospital healthcare workers wore N95 respirators in the emergency room and an H1N1 isolation area, but from July 22 to Aug. 31, surgical masks were used in the same areas.

    The study, published online ahead of the April issue of Clinical Infectious Diseases, found the incidence of H1N1 among the hospital workers remained low during both periods, and in all cases transmission was believed to have occurred among the general public and not among patients.

    "What is more important than using high-filtration or respirator masks for known or suspected cases is to have a uniform policy, such as using surgical masks, when in close contact with all patients," the researchers said in a statement.

    Surgical masks may be as effective as N95 respirators in preventing hospital staff from catching H1N1, researchers in Singapore said.

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    • #17
      Re: Ann Intern Med. Surgical masks were noninferior to N95 respirators for preventing influenza in health care providers.

      > Masks, N95 respirators, both prevent H1N1
      not prevent, only reduce

      more interesting than just "non-inferiority" would be the amount of
      protection. Both could be almost useless...
      I'm interested in expert panflu damage estimates
      my current links: http://bit.ly/hFI7H ILI-charts: http://bit.ly/CcRgT

      Comment


      • #18
        Re: Ann Intern Med. Surgical masks were noninferior to N95 respirators for preventing influenza in health care providers.

        #16 news text:
        "in all cases transmission was believed to have occurred among the general public and not among patients"


        it would be interesting to see which way there were supported their "believe"

        but even if that was enaugh plausible,

        I could suspect that many emergency/isolation room patients had masks or oxigen masks on, and auto-feed delivering,
        so they excreted very low quantities of exhaust air in the nearby zone to the healthcare personnel,
        and even maybe some rooms have special neg.press. climatization,
        so
        the near similar result could be because of the above reasons, not the masks capabilities itself.

        Additionaly, many healthcare/... health workers, have the habbit to wore very unconventionaly their N95 masks (surgical also),
        in a way the air enters through (by face movements induced) less well N95 sealed areas,
        even move it from time to time and reaply it (if in non contageous area),
        things which could vanify the more robust N95 shielding capability, versus the surgical one, in such a study.

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        • #19
          Re: Ann Intern Med. Surgical masks were noninferior to N95 respirators for preventing influenza in health care providers.



          surgical masks worked well in Singapore
          I'm interested in expert panflu damage estimates
          my current links: http://bit.ly/hFI7H ILI-charts: http://bit.ly/CcRgT

          Comment

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