CP is a plasma preparation obtained by a patient who stimulates humoral immunity to produce specific antibodies against the pathogen during a pre-infection and collects the patient's plasma after the patient recovers.[16] In patients with severe infection, infusion of CP neutralizes the pathogens in the body, removes pathogens in the blood circulation, and combines with other antiviral drugs and supportive treatments to achieve the effect of relieving the condition. This evidence concerns the gene CP and infection.