To develop a real-time diagnostic technique with Ad sensor for Adenovirus detection, the investigators conduct a prospective clinical study. In comparison with results from direct sequencing of Adenovirus, the investigators evaluate the performance of Ad sensor , including reproducibility, sensitivity, specificity, and cross-reaction. The potential factors which may interfere with the results would be investigated. With such technique, the investigators hope to make early diagnosis and give Adenovirus patients early treatment to reduce the complications and case-fatality rate.