Abstract. The prevalence of infectious diseases of the respiratory system and, first of all, pneumonia among the population, the presence of various etiological factors and conditions for the appearance of diseases, doctors of various specialties - therapists, surgeons, neuropathologists - predetermine the occurrence of this disease. Faced with this pathology. Few or atypical clinical signs characteristic of the modern course of pneumonia complicate the diagnosis and complicate the treatment of the patient. The presence of diseases accompanied by decompensation against the background of an infectious lung lesion worsens the prognosis and increases the risk of death. It is especially important to correctly diagnose infectious lung disease in time and to prescribe adequate antibacterial therapy.