spigelia anthelmia (unii: wyt05213ge) (spigelia anthelmia - unii:wyt05213ge) spigelia anthelmia: 2 [hp_x]
Not all people who are infected with a norovirus will develop symptoms. If symptoms of a norovirus infection do occur, the illness tends to begin suddenly. Common norovirus symptoms include: 1  Nausea. 2  Vomiting. 3  Watery diarrhea. 4  Some stomach cramping. 5  Dehydration.
Viruses are responsible for 30-40% of all cases of infectious diarrhea and viral gastroenteritis is the second most common illness in the United States, exceeded only by the common cold. Anyone can become infected with norovirus. During norovirus outbreaks there are high rates of infection among people of all ages. There are a large number of genetically-distinct strains of norovirus. Immunity appears to be specific for the norovirus strain and lasts for only a few months.