Now don't get me wrong, I think NPIP testing is an excellent program. Its efficient, its cheap, and it helps flock owners keep their flocks free of disease. My issue with it is the false sense of security it gives buyers. I have read over and over, I ONLY buy from NPIP tested flocks! I know they are safe and healthy. NPIP testing is only good for that day that they test. The flock that tests clean one day can be infected the next, and the flock owner can still sell their stock as NPIP tested. So please, buyers, please understand that it isnt a vaccination that clears a flock for that year. All it means is that the flock was tested on a particular day and was clean that day. When you are buying birds from outside sources, whether NPIP tested or not, quarantine your birds as has been outlined in this forum. And just because a flock has been said to be NPIP tested, still be cautious when buying birds or eggs.