Because the eight countries affected with the h5n1 subtype are not recognized as free of exotic newcastle disease ( end ) , poultry , pet birds and avian products from these countries were already subject to permitting requirements , and live birds and hatching eggs were required to be quarantined for 30 days after entry into the u . s . during the quarantine period , tests were conducted for both avian influenza and end 美国限制禽类动物从亚洲进口，受影响的估计有来自目前爆发禽流感国家的20 , 000只家禽。禁令涉及家禽和观赏鸟，也包括禽类制品。禽类动物加工产品如有进口许可和政府发放的证明，说明该产品已经过适当处理不具有传染性，可不受禁令的限制。
