Answer:
A new peracute disease of chickens is described. The disease is called blue wing disease (BWD) and has occurred frequently in all parts of Sweden since the first outbreak in 1972. ... The disease was given the name blue wing disease (BWD) because of the characteristic dark blue color of the skin under the wings.
Explanation:
A new peracute disease of chickens is described. The disease is called blue wing disease (BWD) and has occurred frequently in all parts of Sweden since the first outbreak in 1972. ... The disease was given the name blue wing disease (BWD) because of the characteristic dark blue colour of the skin under the wings.