CDC Confirms a Second Bird Flu Case in U.S. Dairy Worker. Vaccine Momentum Builds.

U.S. officials said Wednesday that a Michigan dairy worker had tested positive for avian influenza, the second known human case in the U.S. since the virus was detected in late March in cattle. The Centers for Disease Control and Prevention said that the patient only had eye symptoms, similar to the first known infected dairy worker, who developed conjunctivitis in Texas in March. The CDC said that it still considers the risk from the current outbreak to the general public to be low.