CRP and infection: Blood tests indicated a lymphocyte count of 0.62*10^9/L, an elevated CRP level of 66.3 mg/L, and normal PCT; the chest CT showed scattered patchy high-density shadows in both lungs, suggestive of inflammatory lesions (Figure 1, Right); Consultations with respiratory and critical care medicine suggested severe pneumonia, and treatment with methylprednisolone for inflammation, combined with Ceftriaxone, Moxifloxacin for infection, Azvudine for antiviral therapy, and Thymalfasin to boost immunity, showed unsatisfactory results.