what are the causes and symptoms of norovirus?
3782
['Nausea.', 'Vomiting.', 'Stomach pain or cramps.', 'Watery or loose diarrhea.', 'Feeling ill.', 'Low-grade fever.', 'Muscle pain.']
173006
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.
119108
While influenza, more commonly known as 'the flu' and norovirus can occur simultaneously, the two viruses are very different. The norovirus infection affects the stomach and appears as more of a “stomach bug.” Signs and symptoms include a sudden onset of vomiting and/or diarrhea with cramps.
1016307
['foodborne illnesses (food poisoning)', 'indigestion.', 'bacterial or viral infections, like viral gastroenteritis, which is often referred to as a “stomach bug”', 'motion sickness.', 'chemotherapy.', 'migraine headaches.', 'medications, like antibiotics, morphine, or anesthesia.']
29154
The primary symptom of viral gastroenteritis (stomach flu) is diarrhea (non-bloody). Nausea, vomiting, and some abdominal cramping may accompany the diarrhea. Mild fever (about 100 F or 37.77 C), chills, headache, and muscle aches along with feeling tired may occur in some individuals with viral gastroenteritis.
503993
['diarrhea.', 'stomach or intestinal cramps.', 'nausea.', 'vomiting.', 'fever.', 'weight loss.', 'joint aches.', 'muscle aches.']
304541
['Gastrointestinal symptoms such as diarrhea.', 'Cold symptoms such as a runny or stuffy nose.', 'Joint pain.', 'Insomnia.', 'Urinary tract infection.', 'Nausea.', 'Loss of appetite.', 'Indigestion symptoms such as stomach discomfort or pain.']
765860
['Colds, flu, sinus infections, and hay fever.', 'Diarrhea.', 'Stomach upset.', 'Hemorrhoids.', 'Menstrual problems.']
1110017
People with norovirus are infectious for at least 3 days after the symptoms stop and on some occasions for up to 2 weeks.
809198
['food poisoning.', 'indigestion.', 'infections (associated with bacterial and viral illnesses)', 'motion sickness.', 'pregnancy-related morning sickness.', 'headaches.', 'prescription medications.', 'anesthesia.']
331181
['stomach pain, diarrhea;', 'fever or other flu symptoms;', 'cold symptoms such as stuffy nose, sinus pain, cough, sore throat;', 'headache; or.', 'bed-wetting or loss of bladder control in children.']
978604
['headache.', 'fever.', 'abdominal pain or discomfort.', 'dehydration.', 'bloody stool.']
453483
['diarrhea,', 'headache,', 'nausea,', 'upper respiratory tract infection,', 'vomiting,', 'runny or stuffy nose,', 'abdominal pain,', 'fatigue,']
156021
Typical symptoms of a stomach virus (also known as gastroenteritis) are: Diarrhea that may be watery or bloody. Nausea or vomiting. Stomach cramps, muscle aches or weakness.
837215
['flu-like symptoms, including tiredness, a fever, and general aches and pains.', 'loss of appetite.', 'feeling and being sick.', 'diarrhoea.', 'tummy pain.', 'yellowing of the skin and eyes (jaundice)']
822044
With norovirus — the most common cause of viral gastroenteritis in adults — you're contagious when you begin to feel ill. Symptoms usually appear within one to two days of exposure.
297717
['Diarrhea including loose, watery stools (poop) or frequent bowel movements for several days.', 'Fever.', 'Stomach tenderness or pain.', 'Loss of appetite.', 'Nausea.']