DES MOINES, Iowa (AP) — Some international trade partners are declining to buy egg and poultry products from states affected by a deadly strain of bird flu while others are excluding imports only from counties where the virus has surfaced. Agriculture officials say the food supply is safe. But Mexico, Japan and Canada are among 33 countries declining to accept poultry products from entire states, including Iowa, the nation’s leading egg producer, and Minnesota, the top turkey grower in the U.S.

Other countries, including Hong Kong, limit the ban to counties where the virus has been confirmed. Jim Sumner, president of the U.S. Poultry & Egg Association, says 110 countries trade with no restrictions. Also Thursday, the governor of Minnesota, the nation’s leading turkey producer, declared a state of emergency to fight the H5N2 virus.