What was *Avibacterium paragallinarum* previously known as in older literature?
Answer
*Haemophilus paragallinarum*
The causative bacterium for Infectious Coryza has undergone a taxonomic reassignment over time. Specifically, *Avibacterium paragallinarum* was historically recognized and referenced in older scientific publications and veterinary records under the name *Haemophilus paragallinarum*. This historical nomenclature is significant because researchers or veterinarians consulting older documentation for historical outbreak data, diagnostic protocols, or treatment efficacy studies must be aware of this previous classification to accurately source information relating to the principal agent of Coryza.
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