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Updated: Jan 23, 2026

Isolation of Salmonella typhimurium-containing Phagosomes from Macrophages
Published on: October 25, 2017
Novel Salmonella Variant Associated with Mortality in Two Great Spotted Woodpeckers (Dendrocopos major)
Vicky Wilkinson1, Julia Rodriguez-Ramos Fernandez2, Alejandro Núñez3
1Institute of Zoology, Zoological Society of London, Regent's Park, London, NW1 4RY, UK.
Abstract:
Two adult Great Spotted Woodpeckers (Dendrocopos major) from separate sites in Great Britain were examined postmortem in 2013 and 2016. A Salmonella sp. was isolated from multiple tissues in both birds. Histopathology and immunohistochemistry confirmed disseminated salmonellosis. Whole-genome sequencing and biochemical analyses putatively identified both isolates as a novel variant of Salmonella enterica subsp. enterica serovar Hessarek (S. Hessarek). Salmonellosis has seldom been reported in Piciformes, and never before in association with S. Hessarek infection. These findings, therefore, add to current knowledge regarding the range of wild bird species susceptible to this Salmonella serovar, and our understanding of the pathogens affecting Great Spotted Woodpeckers, in particular.
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