Chlamydia infection can be divided into Chlamydia trachomatis, Chlamydia pneumoniae, Chlamydia psittaci, etc. Different types of chlamydia infections are triggered by different reasons, as follows: 1. Chlamydia trachomatis infection: mainly through eye-hand-eye transmission, sexual transmission or mother-to-child transmission, attached to the eyes, genitals and other parts of the invasion of the human body, triggering Chlamydia trachomatis infection, which can be manifested as trachoma, urogenital tract and other symptoms. 2. Chlamydia pneumoniae infection: mainly through respiratory droplet transmission, into the human lung tissue, adhering to the host cell mass reproduction, triggering pneumonia, chronic cough, chest pain and other symptoms. 3. Chlamydia psittaciosis: usually spread through contact with pathogen-carrying birds and feces, usually manifested as high fever, body aches, cough and other symptoms. In case of chlamydial infection, it is recommended to visit the Department of Infection to clarify the specific type of chlamydial infection, and to diagnose and treat it under the guidance of the doctor.