Astroviruses are a group of viruses that primarily cause gastrointestinal infections in humans and animals. They are small, non-enveloped viruses that can lead to symptoms such as diarrhea, vomiting, and abdominal pain. These viruses are particularly common in children and can spread through contaminated food, water, or surfaces. The most well-known type of astrovirus in humans is human astrovirus, which typically results in mild illness. Infections are more prevalent during the winter months and are usually self-limiting, meaning they resolve without specific treatment. Good hygiene practices can help prevent the spread of astroviruses.