id author title date pages extension mime words sentences flesch summary cache txt cord-023817-39r3a4fd Singh, Namita Rotavirus and Noro- and Caliciviruses 2012 .txt text/plain 4637 287 42 Rotavirus is the most common cause of severe diarrhea in infants and children of developed and developing countries worldwide. Worldwide, approximately 40% of hospitalizations for diarrhea in children younger than 5 years of age are attributable to rotavirus infection. The Center for Disease Control and Prevention (CDC) defines a confirmed case of rotavirus gastroenteritis as diarrhea (3 or more loose stools within 24 h) or vomiting (1 or more episodes in a 24 h period) in a child with a positive stool detection of rotavirus by a standard assay, such as an enzyme immunoassay (EIA). The non-bloody, watery diarrhea of rotavirus gastroenteritis is clinically indistinguishable from that caused by other enteric viruses, including norovirus and other caliciviruses, enteric adenovirus, and astrovirus. Norwalk virus carries historical import as the first confirmed viral etiology for human gastroenteritis when it was identified by electron microscopy in stools from a severe outbreak of diarrhea in Norwalk, Ohio in 1972. ./cache/cord-023817-39r3a4fd.txt ./txt/cord-023817-39r3a4fd.txt