2.6 Clinical Characteristics of virus infections
We nest analyzed the clinical characteristics of the patients we tested, and found that there was a higher rate of fever (χ2 =11.271, P =0.001), cough (χ2 =6.987, P =0.008), runny nose (χ2 =7.980, P =0.005) and sneeze (χ2 =4.676, P =0.031) in the positive ones of the infected (Table 5 ).