Susceptibility of clade 1.1 HPAI H5N1 isolates from Cambodia to zanamivir and oseltamivir in the enzyme inhibition assay.

aSamples were all assayed with a 30 min preincubation with inhibitor, and then MUNANA was added and reactions were stopped after 60 min and read. Samples were tested in duplicate and means were calculated from the log10 transformed values, then back transformed.bA/chicken/Vietnam/08/2004 was used as the zanamivir and oseltamivir sensitive reference. Mean and standard deviation of six H5N1 assays carried out during the same period.cVirus used as an elevated oseltamivir IC50 reference from previous testing. Mean and standard deviation of six H5N1 assays carried out during the same period.