20: Chlamydiae, rickettsiae and mycoplasmas

Chapter 20 Chlamydiae, rickettsiae and mycoplasmas

Chlamydiae, rickettsiae and mycoplasmas are a miscellaneous group of organisms with properties common to both bacteria and viruses. Although they are categorized together in this chapter for the sake of convenience, they differ markedly from each other and cause divergent human diseases. A comparison of bacteria, chlamydiae, rickettsiae, mycoplasmas and viruses is given in Chapter 2, Table 2.1.

Chlamydiae

The chlamydiae are a group of microorganisms related to Gram-negative bacteria. However, unlike bacteria, they are unable to grow on inanimate culture media. They are therefore obligatory intracellular parasites. Their main characteristics include the following:

There are three species in the genus Chlamydia:

Jan 4, 2015 | Posted by in General Dentistry | Comments Off on 20: Chlamydiae, rickettsiae and mycoplasmas
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