Osuna Chávez, R.F., Molina Barrios, R.M., Hernández Chávez, J.F., Robles Mascareño, J., Icedo Escalante, J.G.A. and Acuña Yanes, M. 2017. First report of biovar 6 in birds immunized against <em>Gallibacterium anatis</em> in poultry farms located in Sonora, Mexico. Veterinaria México OA. 4, 3 (Sep. 2017). DOI:https://doi.org/10.21753/vmoa.4.3.389.