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1 June 2010 Clinical Signs and Histopathologic Findings Associated with a Newly Recognized Protozoal Disease (Trichomonas gallinae) in Free-Ranging House Finches (Carpodacus mexicanus)
Nancy L. Anderson, Christine K. Johnson, Sandy Fender, Susan Heckly, Marcia Metzler, Pam Nave, Jean Yim
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Abstract

This paper describes the clinical signs and histopathologic findings associated with an emergent disease associated with Trichomonas gallinae infections in free-ranging house finches (Carpodacus mexicanus) in California. Wet mounts were necessary to detect T. gallinae infections in house finches because classical clinical presentation, such as caseous stomatitis or ingluvitis, occurred in <25% of cases. Early detection was instrumental in preventing trichomonosis outbreaks in a high-density nursery (P < 0.0001). Detection before onset of clinical signs was critical. Despite treatment, ∼95% of house finches died within 24 hr of displaying signs of illness. In contrast, 58% of T. gallinae–positive house finches housed in a nursery survived if they received treatment before onset of clinical signs. Recurrent protozoal shedding in survivors was not evident.

Nancy L. Anderson, Christine K. Johnson, Sandy Fender, Susan Heckly, Marcia Metzler, Pam Nave, and Jean Yim "Clinical Signs and Histopathologic Findings Associated with a Newly Recognized Protozoal Disease (Trichomonas gallinae) in Free-Ranging House Finches (Carpodacus mexicanus)," Journal of Zoo and Wildlife Medicine 41(2), 249-254, (1 June 2010). https://doi.org/10.1638/2009-0188R.1
Received: 30 September 2009; Published: 1 June 2010
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