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Updated: Jun 10, 2026

Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing
Published on: December 23, 2022
Survey of Escherichia coli O157 in captive frogs
Ludovico Dipineto1, Antonio Gargiulo, Tamara P Russo
1Dipartimento di Patologia e Sanità Animale, Università di Napoli Federico II, via Delpino 1, 80137, Napoli, Italy.
Abstract:
To evaluate the presence of Escherichia coli O157, cloacal swabs were collected from 60 adult frogs kept as pets and analyzed by culture methods and multiplex polymerase chain reaction for stx1, stx2, and E. coli attaching and effacing (eae) and hly genes. The pathogen was isolated from two samples and both carried stx2 gene. This is believed to be the first report of natural E. coli O157 infection in living frogs.

