El nombre de Escherichia fergusonii es en honor del microbiólogo William H. Ferguson. Es un bacilo gramnegativo, móvil, oxidasa negativo, catalasa positivo, reductor de nitrato y fermentador, oportunista que se asocia a infecciones de sitio quirúrgico. Una niña de 12 años fue remitida a un servicio de urgencias ortopédicas en la Ciudad de México con amputación traumática de la extremidad pélvica derecha. Tenía exposición ósea y requirió varios desbridamientos quirúrgicos. En el hueso y el tejido muscular se aisló E. fergusonii solo resistente a trimetoprima-sulfametoxazol y ampicilina, más otros gérmenes. Recibió un mes de ertapenem más ampicilina, con marcada mejoría. The name of Escherichia fergusonii was in honor of the microbiologist William H. Ferguson. It is a gram-negative rod, motile, oxidase negative,catalase positive, nitrate reducing and fermenter. Opportunistic that is associated with surgical site infections. A 12-year-old girl was referred to an orthopedic emergency department in Mexico City with a traumatic amputation of the right leg, she had bone exposure and required several surgical debridements. From bone and soft tissue samples we isolated E. fergusonii only resistant to trimethoprim sulfamethoxazole and ampicillin, and other germs. She received a month of ertapenem plus ampicillin with marked improvement.
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