Human Influenza type A and B virus detection test kit by using qPCR. Influenza is an infectious disease caused by an influenza virus. Symptoms can be mild to severe and include high fever, runny nose, sore throat, muscle and joint pain, headache, coughing, and feeling tired. Three of the four types of influenza viruses affect humans: type A, type B, and type C, but the responsible for the seasonal flu are main types A and B. This assay can be used to simultaneously detect the causative agents of the seasonal flu, HIAV, and HIBV.