Limited pathogenicity of usutu virus for the domestic goose (Anser anser f. domestica) following experimental inoculation

Journal of Veterinary Medicine. B, Infectious Diseases and Veterinary Public Health
Sonja ChvalaHerbert Weissenböck

Abstract

Usutu virus (USUV) is a mosquito-borne flavivirus of the Japanese encephalitis virus group, which has been associated with avian mortality in Austria since 2001. The affected birds are predominantly Eurasian blackbirds (Turdus merula). In the present study, the pathogenicity of USUV for domestic geese (Anser anser f. domestica) was investigated. Eleven 2-week-old geese were inoculated intramuscularly with 5 x 10(4) 50% tissue culture infectious dose of USUV strain Vienna-2001 blackbird. No clinical signs were seen during the observation period. Four inoculated and one in-contact geese died without preceding clinical signs. Two of the deaths could be attributed to bacterial septicaemia and strangulation, respectively. The cause of death of two experimental and one in-contact animals remained unclear, but lack of evidence for viral lesions and viral antigen in their tissues argued against association with the USUV infection. Although in organs of the majority of inoculated geese (9/11) USUV was detected by reverse transcriptase-polymerase chain reaction, immunohistochemistry for USUV antigen was negative in all tissues of all geese. Evidence of plasma viraemia or viral excretion was found in one goose only. Seroconversion was det...Continue Reading

References

Jun 27, 2002·Current Topics in Microbiology and Immunology·M Malkinson, C Banet
Mar 9, 2005·Emerging Infectious Diseases·Tamás BakonyiNorbert Nowotny

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Citations

Oct 5, 2007·Journal of Clinical Microbiology·Tamás BakonyiNorbert Nowotny
Aug 8, 2013·BMC Veterinary Research·Nicola BuchebnerNorbert Nowotny
Oct 26, 2012·Transboundary and Emerging Diseases·Z HubálekN Nowotny
Jan 11, 2019·The Journal of General Virology·Emna BenzartiMutien Garigliany
Feb 7, 2020·Viruses·Emna BenzartiMutien-Marie Garigliany
Jul 25, 2019·Viruses·Ferdinand RoeschMarco Vignuzzi
Oct 4, 2020·Viruses·Emna Benzarti, Mutien Garigliany
Mar 27, 2021·Emerging Microbes & Infections·Sarah C KuchinskyNisha K Duggal

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