BERKELEY, Calif., Sep 15, 2009 (UPI via COMTEX) -- Using sophisticated
modeling, U.S. researchers showed H1N1 flu infection rates vary via pathways of
exposure -- touching, coughing, inhaling air.
Dr. Mark Nicas of the University of California Berkeley's School of Public
Health and Dr. Rachael M. Jones of the University of Illinois Chicago's School
of Public Health say while healthcare workers and caregivers attending known or
suspect influenza patients are a high-risk group, individuals in classrooms or
crowded stores with people with H1N1 virus also face inhalation risks.
The study, published in the journal Risk Analysis, found 31 percent were likely
to be infected via hand contact with contaminated surfaces, 17 percent via
inhaling small particles carrying virus when in the room with someone ill, 0.52
percent inhaling relatively large particles carrying virus when within three
feet of an infected person and 52 percent while being in close contact with
someone spraying cough droplets carrying the virus onto the eyes, nostrils and
lips.
The study supports general advisories to cover coughs, wash hands frequently and
disinfect surfaces, the researchers say.
The study also substantiates the benefits of caregivers using gloves and a
filtering-facepiece respirator, if possible, when they are in a confined room
with an individual ill with influenza
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Copyright 2009 by United Press International