<unk> is a genus of pathogenic Gram-negative bacteria that are obligate intracellular parasites.<unk> infections are the most common bacterial sexually transmitted diseases in humans and are the leading cause of infectious blindness worldwide. Species include<unk> trachomatis (a human pathogen), Ch. suis (affects only swine), and Ch. muridarum (affects only mice and hamsters). Humans mainly contract Ch. trachomatis, Ch. pneumoniae, Ch. abortus, and Ch. psittaci.
Chlamydia 
Logorrhea 
Leukorrhea
Rhinorrhea
Aerobic vaginitis
Trichomoniasis
Genital herpes
Gonorrhea