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Oropharyngeal (OP) and cloacal (CL) viral shed detected by qRRT-PCR from 2-week-old mallards directly inoculated with the H5N2 and H5N8 HPAI U.S. index viruses and a H5N1 Goose/Guangdong lineage virus (bars represent mean and standard deviation). A, A/Northern pintail/Washington/40964/2014 (H5N2) (A/Np/WA/14). B. A/gyrfalcon/Washington/40188-6/2014 (H5N8) (A/Gf/WA/14). C A/Whooper swan/Mongolia/244/2005 (H5N1) (A/Ws/Mongolia/05).
