Hello there! I hope you're having a great weekend. I have a few questions that I would really appreciate any help with. Is is okay to place a new group of layers with a preciously established group, if they are all in battery cages? My parents have a poultry with 2500 layers with 1000 of them already laying and 1500 of them are still 8 weeks old. All the birds are housed in the building but in different partitions. One of the issues is that, the 1000 previously suffered from a New Castle outbreak but that has been controlled and they do not have the symptoms anymore and mortality rate is low. The concern is whether adding the new birds to the old ones that had New Castle in the past, will affect the new birds. I would really appreciate you advice. Thank you so much for you hep and time.