Chlamydia are a wide-branched family of spherical bacteria that – depending on the subgroup – can cause various diseases. Chlamydia require cells from other organisms to survive and multiply and can cause many diseases, from pneumonia to vascular calcification and possibly heart attacks. Two important subgroups can be distinguished:
Chlamydia pneumoniae can cause inflammation of the bronchi (bronchitis) and sinuses (sinusitis). This type of chlamydia is widespread and can lead to pneumonia (so-called atypical pneumonia, which is usually mild in effect).
Chlamydia trachomatis causes venereal diseases and inflammation of the eye. This chlamydia infection is one of the most common sexually transmitted diseases today. Depending on the age group, up to ten percent of the population is infected with chlamydia (Chlamydia trachomatis). Many women are infected by the pathogen without noticing it (asymptomatic infection). These infections can easily lead to further infections and even sterility.