LAS VEGAS — The Southern Nevada Health District is investigating a report of an outbreak of gastrointestinal illness reported at Wayne Tanaka Elementary School on Jan. 27, 2023. To date, the agency is reporting a total of 71 confirmed and probable cases of norovirus associated with this outbreak.

Two cases were confirmed through laboratory testing, and 69 cases identified through interviews met the criteria to be considered a probable case.

Norovirus is very contagious and spreads from person to person. Norovirus outbreaks can frequently occur in settings such as school campuses and it is often difficult to determine the origin of the illness. The Health District continues to recommend preventive measures to mitigate the spread of this virus. The best way individuals can protect themselves and others from norovirus is by washing their hands thoroughly with soap and running water. Practicing proper hand hygiene is especially important after using the toilet, changing a diaper, and before eating, drinking, preparing or handling food. More prevention tips are available on the Centers for Disease Control and Prevention’s website at www.cdc.gov/norovirus/about/prevention.html.

Norovirus can spread through direct contact with an infected person, by consuming food or water that has been contaminated, or by people touching contaminated surfaces and then putting their unwashed hands in their mouths

People who are exposed to norovirus will usually develop symptoms within 12 to 48 hours after exposure. Most people will recover within one to three days. Common symptoms are diarrhea, vomiting, nausea and stomach pain. Symptoms can also include fever, headache and body aches.

More information about norovirus is available at www.southernnevadahealthdistrict.org/Health-Topics/norovirus/.