Project to Improve the Diagnosis and Treatment Ability of Adult Severe Community Acquired Lower Respiratory Tract Infection

Exclusion Criteria

• •Pregnant or lactating women.
• •* Patients with bronchiectasis.
• •* Patients with active pulmonary tuberculosis.
• •* Aspiration pneumonia or obstructive pneumonia.
• •* Two weeks before the onset of hospital treatment history, this infection can not be excluded from hospital acquired infection.
• •* HIV positive patients (but HIV testing is not required).
• •* Patients who are unable and / or unable to understand and / or implement the investigation protocol.