Bird flu has been detected in a sheep in northern England, the first known case of its kind in the world, Britain's government said, adding to the growing list of mammals infected by the disease and fuelling fears of a pandemic.
Eggs have reached almost $5 per dozen, or more than $7 Canadian, with some big cities seeing nearly double that price
Highly pathogenic avian influenza (HPAI) readily infected cells from milk-producing organs in dairy cows, but beef cells held it off, and virus behaviour was different depending on if it spread through a bird or another mammal
Congress not briefed for weeks, reports withheld, meetings cancelled, reports suggest