CRP and infection: PCT (AUC 0.822, 95% confidence interval, 0.729–0.915) had a significantly higher AUC value than of both CRP (AUC 0.647, 95% confidence interval, 0.521–0.774; P = 0.029) and WBC (AUC 0.572, 95% confidence interval, 0.434–0.710; P = 0.003) for distinguishing severe HAdV infection from nonsevere infection.