I had my older birds (8 - 12 weeks) vaccinated for ILT on June 18, they are in quarantine till July 18, but my younger birds who were only 3 weeks old at the time have not yet been vaccinated. They are inside the house, the older ones are out in the coop. When these guys go out, they are going in to a separate coop. The Provincial Dept. of Ag. make house calls to do it, at cost of 25 cents per bird. I'll have to call and get these youngsters done soon. No signs of any illness, it is non shedding vaccine but I will be very careful to keep the birds separate till all have had the vaccine.