Bacterial infectious pneumonia

Bacterial pneumonia accounts for 80% of various pathogens in adults. Since the era of antibiotics, the prognosis of bacterial pneumonia has improved significantly, but the mortality rate has remained high since the 1960s. At present, there are some new features of bacterial pneumonia, including changes in the pathogen spectrum, especially the significant increase in the g-bacteria pneumoniae rate in hospitals. Although Streptococcus pneumoniae still dominates the community-acquired pneumonia pathogens, the clinical manifestations tend to be atypical . Bacterial resistance is increasing, and so-called "refractory" pneumonia is common, especially among children, the elderly, and immunosuppressed patients. Improving the level of etiological diagnosis, rationally using antibiotics, avoiding the emergence of drug-resistant bacteria, and improving supportive treatment are urgent issues to be emphasized and resolved in the clinical management of pneumonia. Classified by anatomy, pneumonia can be divided into lobular, lobular and interstitial. In order to facilitate treatment, they are mostly classified according to the etiology. They are mainly infectious and physicochemical such as radiation, poison gas, drugs and allergic reactions such as allergic pneumonia. Infectious pneumonia caused by secondary bodies, fungi, and parasites, among which bacteria are the most common.