The results showed that the duration of clinical symptom remission (3.1 ± 1.8 d vs. 6.2 ± 1.6 d, p = 0.036), the mortality rate (0.0% vs. 6.7%, p = 0.042), mechanical ventilation rate (8.1% vs. 21.7%, p = 0.041), and levels of infectious biomarkers (white blood cell count, proportion of neutrophils, C-reactive protein levels, and procalcitonin levels) were significantly lower in the EI group than those in the STI group. This evidence concerns the gene CRP and sexually transmitted disease.