Nowadays there are about 2500 well-known microorganisms that cause infectious diseases
The entrance lecture. Peculiarities of infectious diseases. Classification. The notion about infection, kinds of infectious process. Principles of diagnosis and treatment of infectious diseases. http://www.who.int/topics/infectious_diseases/en/ Nowadays there are about 2500 well-known microorganisms that cause infectious diseases. About 300 nosological forms have been distinctly described (‘nosos‘ means ‘disease’ in Greek). According