Final answer:
Norovirus gastroenteritis is characterized by symptoms like watery diarrhea, vomiting, cramps, fever, and potential dehydration. It's a contagious virus usually resulting from exposure to contaminated food, water, or surfaces and is self-limiting, with the primary concern being hydration.
Step-by-step explanation:
Signs of norovirus gastroenteritis include watery diarrhea, projectile vomiting, mild cramps, fever, and dehydration. These symptoms typically arise 12 to 48 hours after exposure and resolve within a few days without treatment, although dehydration may be a complication.
Noroviruses are highly contagious and can be transmitted through direct contact with an infected person, touching contaminated surfaces, or consuming contaminated food or water. Due to the virus's mode of transmission, outbreaks are common in confined spaces such as cruise ships.
While this illness usually resolves on its own, it's important to maintain proper hydration. If symptoms are severe or dehydration occurs, medical attention may be necessary.