Although it was successful in Britain, officials from the U.S. Food and Drug Administration refused to give permission to U.S. farmers to vaccinate their hens against salmonella, stating that the new egg safety rules that they announced last month were enough, especially that the farmers did not have a solid ground for their claims of salmonella attacks.

The U.S. regulators added that if their egg safety rules had been applied earlier, any signs of potential infection could have been evaded.

The salmonella infection was confirmed in 550 million eggs, leading to 1,300 cases of human infection.

On the other hand, Food Safety Professor, Thomas Humphrey declared that these rules stated by the U.S. FDA have been applied before in the U.K. and proved unbeneficial, adding that ultimately farmers applied vaccinations to protect their hens and their egg production.

According to experts, the FDA’s rules were all about maintaining a high level of sanitation inside henhouses and inside refrigerators used in this industry, in addition to maintaining a regular schedule for testing.

The Associate FDA Commissioner for Food Protection, Jeff Farrar announced in a statement, “The pending legislation is absolutely critical. There are just numerous important measures in that bill that will give us new authorities and resources".