Excerpt from CDC on transmission:
"In contrast, the situation with a pandemic strain of influenza A (H5) would become only too clear because
no one would have any degree of immunity against such a virus, vaccines would not be available for months, and these viruses would likely be highly virulent. Even though efficient human-to-human transmission of the A (H5N1) virus has not yet been observed (by any mode), transmission of influenza A (H5N1) by aerosols from geese to quails has been demonstrated in the laboratory."
"In principle, influenza viruses can be transmitted by 3 routes: aerosols, large droplets, and direct contact with secretions (or with fomites). These 3 routes are not mutually exclusive and, as noted above, may be difficult to disentangle in natural infections."
Review of Aerosol Transmission of Influenza A Virus
Tellier R. Review of aerosol transmission of influenza A virus. Emerg Infect Dis [serial on the Internet]. 2006 Nov [date cited]. Available from http://www.cdc.gov/ncidod/EID/vol12no11/06-0426.htm"
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