Branches of microbiology
The branches of microbiology can be classified into pure and applied sciences. Microbiology can be also classified based on taxonomy, in the cases of bacteriology, mycology, protozoology, and phycology. There is considerable overlap between the specific branches of microbiology with each other and with other disciplines, and certain aspects of these branches can extend beyond the traditional scope of microbiology
In general the field of microbiology can be divided in the more fundamental branch (pure microbiology) and the applied microbiology (biotechnology). In the more fundamental field the organisms are studied as the subject itself on a deeper (theoretical) level.
Applied microbiology refers to the fields where the micro-organisms are applied in certain processes such as brewing or fermentation. The organisms itself are often not studied as such, but applied to sustain certain processes.
Biodiversity hypothesis of health
We are exposed to microbes via different ways from which the most important are respiratory tract, digestive system and skin contact. The habitat we live in and the food we eat influence greatly to our microbiota. Our own way of living and our choices — how we live, eat, move and what are our recreational activities — impacts on the amount of valuable microbe exposure. The amount as well as the microbial diversity of exposure are essential factors.