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.
People exposed to the virus usually develop symptoms of illness within 24 to 48 hours, but symptoms can occur as soon as 12 hours after exposure. People infected with a norovirus can be contagious from the moment they start feeling ill to at least three days after they have recovered.