Trichomonas gallinae infections in the naïve host Montifringilla nivalis subsp. nivalis

Infectious diseases bear a great risk for populations of naive host species. In the present article we inform about the first microscopic and molecular detection of the bird pathogen Trichomonas gallinae in the White-winged Snowfinch (Montifringilla nivalis subsp. nivalis). The emergence of trichomonosis in this highly specialised alpine bird species may pose a serious threat to its already declining population. Interspecies transmission of T. gallinae most likely occurred at a bird feeder in a Swiss mountain village. Monitoring of the disease and immediate measures to prevent its spread are urgently needed.