The US has confirmed a second case of bird flu in humans after an individual tested positive for the disease after contact with cattle. The infection of a dairy worker in the US state of Michigan is the second human infection in connection with the current outbreak, the US Centers for Disease Control and Prevention (CDC) announced on Wednesday. The worker displayed symptoms in his eyes similar to conjunctivitis. The H5N1 virus was first detected in dairy cattle in late March. According to the US Department of Agriculture, wild birds likely infected the cows. In April, the first case of human i…