Ya know .... there really are a few folk around who can't wait to find a conclusion, before they jump to it.
AE is NOT a hatchery problem, it is a breeding flock problem. MM have outlined very clearly the steps they have taken to resolve the issue with their contracted suppliers ..... sounds like a decent plan.
So before y'all chip in with uninformed speculation, how about we find out if actual customers, who we know, are having actual problems now.