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How would this even work? If sent on a boat, they would have to refrigerate them to damn near freezing so they can make the trip. If flown, the added cost would be steep.
The whole fresh egg supply chain seems to be linked to local farms.
It's a U.S. thing. Eggs are refrigerated to prevent salmonella. The U.S. Food and Drug Administration rules require eggs be kept under 45°F/7°C at all times.
Afaik they're refrigerated because they're "ultra washed" (because I don't remember details), which removes the natural coating/protection of the eggs.
But why would the eggs need to be refrigerated on the ship already? If it's a US law wouldn't it just start applying once the eggs reach the US? Here chickens are required to be vaccinated against salmonella anyways so that shouldn't be a big issue.