EN
To date research on Chlamydia intracellular bacteria causing many diseases in animals and humans, has concentrated on Chlamydia sp. and Chlamydophila sp. pathogens forming the Chlamydiaceae family in the Chlamydia order. Recently, thanks to the techniques of molecular biology, the taxonomy of order for Chlamydiales has been extended to three new families: Parachlamydiaceae, Simkaniaceae and Waddliaceae. Those families includes germs isolated as endosymbionts of protozoa, sludge, insects, isopods, fishes, bats, cattle and as cell culture contaminants. Environmental Chlamydia are included amongst those microorganisms and are considered to be potential pathogens of humans and animals.