Professional Medical Interpretation of Chlamydia Infection (2023 Updated Edition) Author: Dr. Zhang Weiming, Chief Physician Certified by: Infectious Diseases Branch of Chinese Medical Association Last Updated: August 20, 2023 I. Pathogenic Characteristics of Chlamydia Medical Definition: Chlamydia (Chlamydia trachomatis) is a Gram-negative obligate intracellular bacterium with unique developmental cycles: Elementary Body (EB): Infectious phase, diameter 0.2-0.4μm Reticulate Body…