Infestation
For infestation as a paranormal phenomenon, see Infestation (parapsychology).
Infestation is called invasion of a living organism by external or internal parasitic agents. The fundamental difference with the term infection is that the latter is applied exclusively to microorganisms whose purpose is to reproduce it in the infected organism, causing in many cases the death of the same, whereas the objective of the parasites is their survival at the expense of parasite host.
The term infection should be restricted to the action of bacteria, viruses and other microorganisms whose action is described above.
Examples of parasites:
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