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.
Symptoms of norovirus illness usually begin about 24 to 48 hours after ingestion of the virus, but they can appear as early as 12 hours after exposure. Noroviruses are very contagious and can spread easily from person to person.ymptoms of norovirus illness usually begin about 24 to 48 hours after ingestion of the virus, but they can appear as early as 12 hours after exposure. Noroviruses are very contagious and can spread easily from person to person.