CD79A and infection: Griffin et al demonstrated that multiplex immunoassays for salivary antibodies to a variety of waterborne pathogens including 3 norovirus genotypes (GI.1, GII.4, and GII.9) could detect a GII.4 infection in an adult volunteer and that salivary immunoassays to detect IgG and IgA against Norwalk virus could correctly identify 3 infected and 4 noninfected volunteers in a challenge study [16, 17].