Molecular detection of Ehrlichia chaffeensis in marsh deer (Blastocerus dichotomus) and their parasitic Amblyomma triste ticks in Argentina suggests a local transmission cycle.

Abstract excerpt

BACKGROUND: Since the first finding of Ehrlichia chaffeensis in the Argentinian marsh deer populations in 2018, we have conducted ongoing surveillance efforts to better understand the ecological and epidemiological dynamics of this zoonotic tick-borne pathogen in the region. METHODS: Over a period of 7 years (2018-2024) we analyzed blood and tissue samples from 40 marsh deer (Blastocerus dichotomus) and 13...

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