Translator Disclaimer
25 August 2017 Response of House Finches Recovered from Mycoplasma gallisepticum to Reinfection with a Heterologous Strain
Author Affiliations +
Abstract

After recovery, house finches (Haemorhous mexicanus) reinfected with the same Mycoplasma gallisepticum strain remain partially resistant to reinfection for at least 14 mo in that they recover from reinfection much more rapidly than do Mycoplasma gallisepticum-naïve birds. To test the response of birds to reinfection with a heterologous strain we performed two experiments. In a first experiment we exposed birds to one of three strains that differed in virulence. After they had recovered all were reinfected with the most virulent-strain available at the time of the experiment. In a second experiment we infected and later reinfected house finches with one of two Mycoplasma gallisepticum strains whereby we switched the order of the strain used. In both experiments, disease in birds reinfected with a more-virulent strain caused more-severe disease. Our data suggest that the observed increase in Mycoplasma gallisepticum virulence, once the disease has become endemic in free-ranging house finches is—in part—driven by increased resistance of recovered birds to strains of equal or lower virulence.

© 2017 American Association of Avian Pathologists
André A. Dhondt, Keila V. Dhondt, Wesley M. Hochachka, David H. Ley, and Dana M. Hawley "Response of House Finches Recovered from Mycoplasma gallisepticum to Reinfection with a Heterologous Strain," Avian Diseases 61(4), 437-441, (25 August 2017). https://doi.org/10.1637/11571-122016-Reg.1
Received: 2 February 2017; Accepted: 1 August 2017; Published: 25 August 2017
JOURNAL ARTICLE
5 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top