What are the causes of Chlamydia pneumonia?

summary

There are many diseases associated with Chlamydia infection. Chlamydia can cause atypical pneumonia after infection of the lungs. In recent years, the incidence rate of atypical pneumonia is very high, because what he has little specific performance, so it is easily misdiagnosed in clinic. So what are the causes of Chlamydia pneumonia? I'd like to share my views with you.

What are the causes of Chlamydia pneumonia?

Reason 1: most people are infected with Chlamydia pneumoniae, which has a high rate of recessive infection. About half of the adult serum has Chlamydia pneumoniae IgG antibody, which indicates that these people have been infected, male antibody positive rate is higher than female, healthy people will also become Chlamydia pneumoniae carriers. But these healthy people carrying Chlamydia pneumoniae, once the resistance decreases, Chlamydia pneumoniae will start to attack the body, after cure, the patient's body will decline again, and the antibody titer of Chlamydia pneumoniae in the body will also decline, causing repeated attacks of Chlamydia pneumoniae pneumonia.

The second reason is that Chlamydia pneumoniae infection is universal in the world. Chlamydia pneumoniae is transmitted from person to person through respiratory secretions. Therefore, in semi closed environment, such as family, school, military and other densely populated work areas, there may be a small-scale epidemic. Chlamydia pneumoniae infection may also be associated with asthma, coronary heart disease and atherosclerosis, acute attack and deterioration of chronic obstructive pulmonary disease. At present, Chlamydia pneumoniae is the main pathogen of community-acquired pneumonia after Diplococcus pneumoniae and Haemophilus influenzae. Together with Legionella pneumophila and Mycoplasma pneumoniae, Chlamydia pneumoniae has become the three atypical pathogens of community-acquired pneumonia, accounting for 10% - 20% of community-acquired pneumonia.

The third reason: Chlamydia is a pathogen smaller than bacteria, more common, mainly contact infection, mainly in the reproductive and urinary system infection, can also occur in other parts, the newborn is infected by the mother's reproductive tract delivery, neonatal infection mainly causes conjunctivitis and pneumonitis. Chlamydia can only adhere to the receptors on the surface of epithelial cells in respiratory tract or urogenital tract, but not into tissues and blood.

matters needing attention

After Chlamydia infects human body, it first invades columnar epithelial cells, grows and reproduces in cells, and then proliferates in cells of monocyte macrophage system. Chlamydia can also escape from the main immune defense function and get intermittent protection. The pathogenic mechanism of Chlamydia is to inhibit the metabolism of infected cells, dissolve and destroy cells, and lead to the release of lysozyme. The cytotoxic effect of metabolites causes allergy and autoimmunity.