Infectious lesions in both lungs refer to the presence of infectious lesions in the left and right lungs. The underlying cause of infectious lesions in both lungs is the infection caused by pathogenic bacteria, mainly including the following: 1, bacterial infections, the most common, accounting for about 70% or more, including Gram-negative bacteria, Gram-positive bacteria, anaerobic bacteria, aerobic bacterial infections. 2. tuberculosis infection, i.e. Mycobacterium tuberculosis infection, mostly causing chronic infection. 3. viral infection. The main cause of viral pneumonia. 4, fungal infections, including Candida, Aspergillus infection, etc. 5, mycoplasma and chlamydia infection, mainly Mycoplasma pneumoniae and Chlamydia infection. 6, parasitic infections. The main ones are Schistosoma chinensis and malaria infection. After the pathogenic bacteria infect both lungs, in addition to damage to lung tissue, it can also cause chills, fever, cough, chest pain and other symptoms, which need to be treated for the pathogenic bacteria.