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This is not a yes or no thing. It would depend on what stock the hatchery started with. So I guess the answer is maybe.
Really, it's not hard to bring birds in from other sources. Best to work with breeders who participate in the NPIP program (they will have their operations inspected at least once a year, and all their birds tested for Pullorum/Typhoid as well), and create a quarantine pen for the birds where they can stay for at least four to six weeks.
Also, I usually treat new birds with Tylan in their water for the first five days, just to cover all the bases, as it were.
Of course, I understand if you don't want to bring birds in, but if you're going to show, you're going to be exposing your birds to things you'll want to quarantine for anyway, so setting up a quarantine pen/area is a good idea anyway.
Or, get hatching eggs, and before setting them, mist them lightly with Tek-Trol. It is safe for the eggs, and should remove any external viruses or bacteria they might have.