Herd-level prevalence and associated risk factors for Mycobacterium avium subsp. paratuberculosis in cattle in the State of Paraíba, Northeastern Brazil von Vilar, Ana L.T., Santos, Carolina S.A.B., Pimenta, Carla L.R.M., Freitas, Theonys D., Brasil, Arthur W.L., Clementino, Inácio J., Alves, Clebert J., Bezerra, Camila S., Riet-Correa, Franklin, Oliveira, Taynara S., Azevedo, Sérgio S.

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