What is Beak and feather disease virus?
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A genus of the family CIRCOVIRIDAE that infects fowl, swine, and psittacine birds. The three species are CHICKEN ANEMIA VIRUS causing transient anemia and immunosuppression in baby chicks; Beak and feather disease virus causing a fatal disease in psittacine birds; and Porcine circovirus causing postweaning multisystemic wasting syndrome in pigs.