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Prevention
of the community spread of influenza viruses is virtually impossible
because: (1) up to half or more of influenza infections are very mild or
without any illness; and (2) the vast majority of influenza infections are
transmitted via face to face contact from acutely infected persons via
aerosol particles.
Influenza
viruses can spread rapidly
in
all households, schools, and most work places. Although
influenza viruses can be transmitted via direct fomite contact, influenza
viruses do not survive in the environment very long (hours or less) and this
route of influenza virus transmission is of minimal public health
significance. Thus, the washing and �dis-infecting� of school desks and
chairs (even walls), are useless or ineffectual for the prevention of the
spread of influenza in schools or work-places.
Routine
hand-washing in schools, and all work places, etc., is recommended
for
preventing transmission
of
common cold viruses
and many other human pathogens (enteric agents, etc.), but routine
hand-washing has little to no impact on influenza virus transmission!
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