− | Microorganisms are categorised into distinct types. The main categories of veterinary interest are bacteria, fungi, protozoa, viruses and prions, although a wide array of other microorganisms also exist such as algae. | + | Microorganisms are categorised into distinct types. The main categories of veterinary interest are bacteria, fungi, protozoa, viruses and prions, although other microorganisms also exist such as algae. |