ROBIN! This is what I was talking about. I copied and pasted. I am wondering if this may be it...
IB is found worldwide but in varying strains with more emerging all of the time. This is why vaccination is not always effective. Most vaccination programs will include strains specific to your particular area of the world, but it is sometimes difficult to include all of the strains that are also emerging in that same area. While vaccination may be a good prevention measure, you must accept the fact that your birds could become exposed to a strain not covered by the vaccination. To avoid maternal antibody resistance to vaccination, chicks should be vaccinated for IB at the age of two weeks.
The primary target of the IB virus is the trachea, which results in tracheal rales (rattling), but also includes such symptoms as coughing, sneezing, chirping, and a loss or reduction in egg production. Less common symptoms include a nasal discharge and wet eyes. Some sinus swelling may also occur but this is rare and usually only seen in very young chicks. In some hens, you may also find a fluid (yolk) buildup in the abdomen. Not all birds will show symptoms. But ALL birds will have the virus.
In a more virulent strain, IB can attack the kidneys and in these cases, the bird will typically show no upper respiratory symptoms but will become drooped (tail down). In these cases, death is almost certain within 24 hours and there is almost nothing you can do to reverse the kidney failure. Another possibility that includes the kidneys is if the bird recovers the initial upper respiratory symptoms, but then fails later due to kidney damage that was caused by the virus. The virulent strain that attacks the kidneys can usually be confirmed by necropsy with the finding of kidneys that are swollen and pale. It is not uncommon to have more than one strain of IB infect the same flock at the same time.
Might want to read the whole article... http://www.shagbarkbantams.com/ib.htm
IB is found worldwide but in varying strains with more emerging all of the time. This is why vaccination is not always effective. Most vaccination programs will include strains specific to your particular area of the world, but it is sometimes difficult to include all of the strains that are also emerging in that same area. While vaccination may be a good prevention measure, you must accept the fact that your birds could become exposed to a strain not covered by the vaccination. To avoid maternal antibody resistance to vaccination, chicks should be vaccinated for IB at the age of two weeks.
The primary target of the IB virus is the trachea, which results in tracheal rales (rattling), but also includes such symptoms as coughing, sneezing, chirping, and a loss or reduction in egg production. Less common symptoms include a nasal discharge and wet eyes. Some sinus swelling may also occur but this is rare and usually only seen in very young chicks. In some hens, you may also find a fluid (yolk) buildup in the abdomen. Not all birds will show symptoms. But ALL birds will have the virus.
In a more virulent strain, IB can attack the kidneys and in these cases, the bird will typically show no upper respiratory symptoms but will become drooped (tail down). In these cases, death is almost certain within 24 hours and there is almost nothing you can do to reverse the kidney failure. Another possibility that includes the kidneys is if the bird recovers the initial upper respiratory symptoms, but then fails later due to kidney damage that was caused by the virus. The virulent strain that attacks the kidneys can usually be confirmed by necropsy with the finding of kidneys that are swollen and pale. It is not uncommon to have more than one strain of IB infect the same flock at the same time.
Might want to read the whole article... http://www.shagbarkbantams.com/ib.htm
