Microbiology from Greek mīkros, “small”; βίος, bios, “life“; and -logia is the study of microscopic organisms, either unicellular (single cell), multicellular (cell colony), or acellular (lacking cells).

The role of the Microbiology involves the isolation, identification, treatment and prevention of human infections by disease-causing organisms. These include Bacteria, Viruses, Fungi and Parasites.

Viruses have been variably classified as organisms,as they have been considered either as very simple microorganisms or very complex molecules. Prions, never considered microorganisms, have been investigated by virologists, however, as the clinical effects traced to them were originally presumed due to chronic viral infections, and virologists took search — discovering “infectious proteins”.

It detects the presence of infection caused by bacteria and fungi. A nurse or doctor may obtain a sample from a patient and send it to the department if it is suspected that an illness may be due to a bacterial or fungal infection. The laboratory isolates the micro-organism and tests which antibiotics or antifungals can be used to treat the infection.