The cows were infected with a second form of avian influenza
Nevada dairy cows were infected with a new form of bird influence which is distinct from the version that has spread through the herds in the last year, has announced the Department of Agriculture of the United States on Wednesday.The discovery indicates that the virus, known as H5n1, has spread from birds in cows at least twice - leading to these two series of infections - and that it could continue to do so. It also suggests that the virus can involve a persistent risk for cows and people who work closely with them.Before last year, scientists did not know that the cows were susceptible to this type of influence."This is not what someone wanted to see," said Louise Moncla, an evolutionary biologist who studies avian influence at the University of Pennsylvania. "We must now consider the p...