What is the seriousness of the pneumatic plague in ukraine?

Dz uncertain. There is really a great deal of controversy about the cause of deaths in the ukraine in 2009. One hypothesis is that it was aerosolized plague and another was that it was a mutated and highly virulent hini virus. Regardless of the cause it was very serious.
Pneumonic plague. Is very serious anywhere. Besides having a quite high mortality rate itself, it is the form that is directly transmitted from person to person.