This rapid chromatographic immunoassay detects norovirus in human stool samples and helps diagnose norovirus infection. Noroviruses are highly contagious and cause acute gastroenteritis with symptoms such as nausea, vomiting and diarrhoea. They are a major cause of outbreaks in institutions such as hospitals and nursing homes. Early detection through testing is essential to prevent the rapid spread of infection, especially in vulnerable populations such as the elderly and infants, where the disease can be severe or even fatal if left untreated.