A new variant of the H5N1 bird flu — the same one that led to the death of a Louisiana man — has for first the first time been found in infected U.S. dairy cattle.

The first case of bird flu in a human in Ohio has been reported, according to officials. A farm worker from Mercer County, Ohio, located on the state's western border along Indiana, came into contact with deceased poultry that was infected with the virus,

Ohio has led the nation recently in the number of commercial birds affected by the bird flu. Mercer County, in the western part of the state, is among four counties there where bird flu has been detected in commercial poultry flocks,