Two more outbreaks of highly pathogenic avian influenza, also called bird flu, are detected in Iowa.
1.5 million chickens and 28,000 turkeys are slaughtered to prevent the virus from spreading to other herds. The virus spreads easily between chickens through nasal and eye secretions, still as manure.
Seventeen states have already had outbreaks in commercial or private outdoor flocks this year.
Almost 15.6 million chickens and 1.3 million turkeys have died since January, thanks to those outbreaks.
Agriculture Secretary, Mike Naig said the situation could get worse as the spring migration is likely to continue for a few more months.
Naig also said that it is too early to calculate the economic losses this year. "It's a difficult time for poultry producers, not just those with an infected site," he added.
Food prices are high due to inflation and supply chain problems, and if the avian flu outbreak spreads to enough farms, prices for chickens, turkeys, and eggs could rise further.
The bird flu in Iowa has already stood nine outbreaks, affecting seven commercial flocks and two backyard flocks.
The virus can spread from infected birds to people, but such infections are rare and haven't caused potential outbreaks among humans.
The best way to handle chicken and eggs is to cook them to an enclosed temperature of 165 F "as a general food safety precaution.
