Identification of an unusual cluster of human granulocytic anaplasmosis in the Estrie region, Québec, Canada in 2021
Abstract Background: Human granulocytic anaplasmosis (HGA) is a potentially severe tick-borne infection caused by the bacterium Anaplasma phagocytophilum (A. phagocytophilum) of the genus Rickettsia. Here, we describe the epidemiological and clinical characteristics of an unusual cluster of HGA cases detected in the Estrie region in Québec, Canada, during the 2021 transmission season. Methods: Confirmed cases…