Bird flu has infected a third US farm worker
A third farm worker in the United States has been infected with avian influenza, raising concerns about an outbreak among dairy cattle first identified in March.The worker is the first in this outbreak to have respiratory symptoms, including cough, sore throat and watery eyes, which generally increase the likelihood of transmission to other people, federal officials said Thursday.The other two people only had severe eye infections, probably due to exposure to contaminated milk.All three individuals had direct exposure to dairy cows, and so far none have spread the virus to other people, Dr. Nirav Shah, principal deputy director of the Centers for Disease Control and Prevention, said at a news conference.This suggests that the virus, called H5N1, has not acquired the ability to spread betwe...