DES MOINES, Iowa (AP) — Iowa agriculture officials say bird flu will claim an additional 4 million Iowa egg-laying chickens on two more farms in a county already hit by the disease. Officials are waiting for preliminary tests on two farms in Wright County to be confirmed. The county earlier reported a farm with 2.8 million chickens affected. Iowa’s chicken loss is approaching 25 million, more than 40 percent of the state’s egg-laying flock.

Officials on Friday also announced detection of the virus on five more turkey farms, including one with 42,000 birds. That brings the state to 44 cases in 12 counties. Minnesota and Wisconsin, two other states hit hard with the disease, reported no new bird flu cases Friday. The virus has spread to well over 30 million birds in 13 states.