urveillance for rotavirus-associated diarrhea after implementation of rotavirus vaccination can assess vaccine effectiveness and identify disease-associated genotypes. During active vaccine postlicensure surveillance in the United States, we found a novel rotavirus genotype, G14P, in a stool sample from a child who had diarrhea. Unusual rotavirus strains may become more prevalent after vaccine implementation.
This surveillance has detected the emergence of G12P and G9P rotavirus genotypes, as well as 3 reported instances of US children infected with G8P rotavirus (3–5,10). During the 2009 winter season (December 2008–June 2009) in Rochester, New York, 54 (30%) of 183 enrolled children with acute gastroenteritis had rotavirus infection. Fifty (94%) of 51 rotavirus strains were typical US strains, with G or P antigens contained in the licensed rotavirus vaccines; 3 were G8P (10). One strain, however, appeared to be an unusual reassortant not previously reported in human infection. We describe this novel rotavirus genotype, G14P, found along with enteric adenovirus in a stool sample from a child with diarrhea.