What is a microbiologist?
Someone who studies microbiology is called a microbiologist.
Microbes are bacteria. Typically the discipline is split into industrial microbiology and medical microbiology. The former study mostly fermentation processes on a large scale which are used to produce beer, antibiotics, pharmaceuticals and enzymes. The latter diagnose and study the pathogenic microbes which make people/animals ill. You will also find microbiologists carrying out health inspections, For example, in factories or resturants where food is made and testing water quality for bathing and drinking.