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Below are several MMWR articles that provide more information about Powassan virus disease cases in the United States.
West Nile virus and other nationally notifiable arboviral diseases — United States, 2021.
West Nile virus and other domestic nationally notifiable arboviral diseases - United States, 2020.
West Nile virus and other domestic nationally notifiable arboviral diseases - United States, 2019.
West Nile virus and other domestic nationally notifiable arboviral diseases - United States, 2018.
West Nile virus and other nationally notifiable arboviral diseases - United States, 2017.
Notes from the field: Powassan virus disease in an infant - Connecticut, 2016.