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Norovirus Epidemiology And Duration Of Shedding In Michigan, 2007-2008, Nodira A. Abdujamilova, David Dixon, Laura Mosher, Patricia Somsel, Anthony Muyombwe, Patricia A. Clark, Jeffrey Massey, Brenda Brennan, Paul C. Bartlett

Michigan Journal of Public Health

Background: In the United States, an estimated 23 million cases of norovirus (NoV) are reported each year, and although mortality is low, the morbidity and economic impact are substantial. Methods: RT-PCR and sequencing were used for identification of NoV genotypes obtained from outbreak and sporadic cases. RT Quant PCR was used to determine the viral load in fecal specimens. In order to rule out bacterial infection as the cause for acute gastroenteritis (AGE), bacterial culture for Salmonella, E.coli O157, Shigella, Campylobacter and Clostridium difficile was performed by standard laboratory procedures. The duration of NV shedding was investigated with longitudinal sampling …