How long before they lay again?

[Schwartzfarmnc]

We have 2 birds 28 weeks old, that stopped laying about 2.5 weeks ago due to either worms or just not feeling good, both are back 100% as they were before but no eggs, how long before we can expect them to start back up?

 

[Schwartzfarmnc]

Nobody have an idea?

They are on their second dose of Valbazen and are eating like champs again, but no eggs and no squating either. In your experience in either a trauma or illness, what is the lead time to start laying again? All other girls (11) that are laying continue to do so with no interuptions. Any help or advice would be great.