While Thanksgiving might bring friends and family together, it also gathers around infection cases. In recent weeks, cases of Norovirus have risen in the United States, according to recent data from the Centers for Disease Control and Prevention. Nearly 14% of the tests for the illness came back positive during the week that ended on November 15, stated the data. Out of the 2,700 tests conducted about 380 cases of norovirus were diagnosed in that period. Know the symptoms and prevention tips for the illness. What is Norovirus?According to the CDC, Norovirus is the leading cause of vomiting, diarrhoea and foodborne illness in the US. It is a highly contagious virus that causes vomiting, diarrhoea, acute gastroenteritis and inflammation in the stomach or intestines. While anyone can get infected with norovirus, eating raw oysters or filter-feeding shellfish can increase the risk. What are the symptoms of Norovirus?Symptoms of the illness develop 12 to 48 hours after being exposed to the virus. Most common symptoms include stomach pain, nausea, vomiting, diarrhoea, fever, headache and body aches. It can also lead to dehydration, symptoms of which can include:Decreased urinationDry mouth and throatFeeling dizzyCrying with no tearsUnusual sleepinessHow to prevent catching Norovirus?Norovirus is highly contagious but taking preventative steps can help protect you and others. According to the CDC these are some measures to adopt:Wash your hands often Cook shellfish thoroughly and wash fruit and vegetablesClean and disinfect contaminated surfacesWash laundry in hot waterStay home when sick for 48 hours after the symptoms stopWith the beginning of the holiday season, people experiment with a lot of dishes and meet and greet each other often. These can both be transmissive sources of norovirus and thus staying aware and cautious is better. Note: The information provided in this article is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any new medication or treatment and before changing your diet or supplement regimen.