Which virus is commonly tested for in stool samples from children showing symptoms of gastroenteritis?

Norovirus is the primary virus commonly tested for in stool samples from children exhibiting symptoms of gastroenteritis. This RNA virus is a leading cause of acute gastroenteritis worldwide, particularly in young children and can result in severe vomiting and diarrhea.

Stool testing for norovirus is crucial because it is highly contagious and can spread rapidly in communal settings, such as schools and daycare centers. The presence of norovirus in stool samples can confirm an active infection and help guide appropriate public health responses to prevent further outbreaks.

In contrast, while other viruses listed may cause gastrointestinal symptoms or other diseases, they are not typically associated with gastroenteritis in children. HIV primarily affects the immune system and is not usually tested in the context of gastroenteritis symptoms. Hepatitis A can cause liver issues and may lead to gastrointestinal symptoms, but stool testing is less common compared to norovirus. Respiratory syncytial virus (RSV) primarily affects the respiratory system, leading to symptoms like wheezing and difficulty breathing, and is not relevant in the context of stool samples for gastroenteritis.