Norwalk virus sources

To help make sure that food is safe from norovirus, routinely clean and sanitize kitchen utensils, counters, and surfaces before preparing food. Facts About Noroviruses on Cruise Ships. Follow these tips to prevent norovirus at youth camps. Learn about food safety practices that can help prevent these outbreaks. Ways to Prevent Foodborne Norovirus Outbreaks. Skip directly to site content Skip directly to page options Skip directly to A-Z link.

Section Navigation. Facebook Twitter LinkedIn Syndicate. Preventing Norovirus. Minus Related Pages. You can help protect yourself and others from norovirus by washing your hands thoroughly with soap and water and following other simple prevention tips. Practice proper hand hygiene Wash your hands thoroughly with soap and water especially after using the toilet or changing diapers, always before eating, preparing, or handling food, and before giving yourself or someone else medicine.

Pe was renamed GII. Dual-typing nomenclature genotype and P-type was also proposed; the genotype is reported first, followed by the P-type in brackets such as: GI. Related Links. Links with this icon indicate that you are leaving the CDC website. Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website. You will be subject to the destination website's privacy policy when you follow the link.

CDC is not responsible for Section compliance accessibility on other federal or private website. Norovirus symptoms usually last one to three days, and most people recover completely without treatment.

However, for some people — especially infants, older adults and people with underlying disease — vomiting and diarrhea can be severely dehydrating and require medical attention.

Norovirus infection occurs most frequently in closed and crowded environments such as hospitals, nursing homes, child care centers, schools and cruise ships. Signs and symptoms usually begin 12 to 48 hours after exposure to norovirus and last one to three days. You can continue to shed virus in your feces for up to two weeks after recovery.

This shedding can last weeks to months if you have an underlying health condition. Some people with norovirus infection show no signs or symptoms. However, they are still contagious and can spread the virus to others. Seek medical attention if you develop diarrhea that doesn't go away within several days.

Also, call your doctor if you have severe vomiting, bloody stools, stomach pain or dehydration. Noroviruses are highly contagious and are shed in the feces of infected humans and animals. You can get norovirus by:. Noroviruses are difficult to kill off because they can withstand hot and cold temperatures and most disinfectants. For most people, norovirus infection usually clears up within a few days and isn't life-threatening.

But in some people — especially children, older adults and people with compromised immune systems — norovirus infection can cause dehydration.