Avian Influenza (H5N1) Infection in HumansAvian Influenza (H5N1) Infection in Humans .On page 1382, lines 3 and 4 of the first footnote in Table 5 should have read ``at least 95 percent efficiency in filtering particles with a mean diameter of more than 0.3 µm,´´rather than ``particles with a mean diameter of more than 3 µm,´´as printed.
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