美国农业部首席兽医官：预计今年夏天家禽中的禽流感疫情将不会太严重。预计到年底，家禽养殖场的禽流感疫情将得到控制。预计美国在今年年底之前恢复从墨西哥进口牛肉。

Core Insights - The Chief Veterinary Officer of the USDA anticipates that the avian influenza outbreak in poultry will not be severe this summer [1] - It is expected that by the end of the year, the avian influenza situation in poultry farms will be under control [1] - The U.S. is projected to resume beef imports from Mexico by the end of this year [1]