MOHAMED SHABEEB E
Born : 11 December 1843, Clusthal- kingdom
Died : 27 May 1910 (aged 66), Baden.
Nationality : German
Field : microbiology
Institutions : Imperial Health Office, Berlin
He is a German physician.
The specific diseases are caused by specific germs.
He is widely regarded as one of the founders of the
science of bacteriology and microbiology.
Robert koch showed that a spore forming organism.
Bacillus anthracis was the cause of anthrax disease.
This organism was then epidemic in sheep, cattle
and other domestic animals.
This disease also occurs in man.
No laboratory and he carried out his
experiments in his home.
Using experimental animal is mice.
He is a father of medical microbiology.
Robert koch followed four experimental
steps which have been known as Koch’s
1.The microorganism must be present in every
instance of the disease and absent from
2.The microorganisms must be capable of
being isolated and growth in pure culture.
3.When the microorganisms is inoculated into
a healthy host, the same disease condition
4.The same microorganisms must be re-
isolated from the experimentally infected
Discovery of bacteriology,
Koch’s postulates of germ theory,
Isolation of anthrax, tuberculosis and
He is established that specific diseases are
caused by specific germs (Germ theory of
He won the Nobel prize for medicine in