Evaluation of in vivo and in vitro Pathogenicity of Aeromonas veronii Isolated from Freshwater Fishes of Andhra Pradesh

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Discussion

In vivo and in vitro assessments revealed virulence genes in Aeromonas veronii strains, indicating significant threats to aquaculture.

The pathogenicity of A. veronii strains was strongly correlated with specific virulence genes, especially hly+ and ahyB+.
In vivo challenge experiments indicated that strains with just four virulence genes could cause over 90% mortality in fish.
A total of 95 A. veronii strains were isolated from freshwater fishes, demonstrating genetic diversity in virulence profiles.
The high virulence posed by A. veronii underlines the urgent need for better management in freshwater aquaculture systems.

Lavanya et al. (2025) studied this question.

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