Maine State Veterinarian Don Hoenig says it has been more than a year since any of Maine's major commercial egg farms have tested positive for the bacterium responsible for last summer's outbreak.
Hundreds of people were sickened in several states and 550 million eggs from Iowa farms were recalled.
At the center of the recall was egg farm owner Austin "Jack" DeCoster. He got his start in Maine, and his farms there were repeatedly cited for health and safety violations. No human salmonella cases have been linked to his Maine farms in decades.
The FDA tested Maine egg farms this fall as part of a new rule requiring farms with more than 50,000 hens to implement measures to prevent salmonella.