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5.2.2 Virus – Host Interactions
The reactions that occur in host in response to viral infections are summarized below:
Virus – virus interactions: A virus-virus interaction (VVI) a measurable difference in the course of infection of one virus as a result of a concurrent or prior infection by a different species or strain of virus. A concurrent infection may include infection of the same cell by two or more virus species, or two viruses may infect different cell types within one organism and produce measurable VVIs. Measurable differences include changes in tissue permissiveness or tropism, viral replication, patterns of progeny production and release, latency, pathology including immunopathology, and immunological responses. The simple case of a prior viral infection conferring protective immunity against future infections with an immunologically identical virus is well known in vertebrates. |