Clinical signs of disease were apparent within 24 hours of infection and within eight days euthanization was necessary.

感染后24小时内临床症状就很明显了，实验8天不得不给予了安乐死处置。

youdao

Hoenig, the Maine state veterinarian, said the allegations included keeping too many birds in cases, failing to treat injured chickens or promptly remove dead animals, and improper euthanization.

CNN: No further egg recalls expected, feds say