It is the custom to speak of (a) bubonic plague, (b) septicmic plague, (c) pneumonic plague, as though they were three diseases.
The more fatal form is known as pneumonic plague, and in this the lungs are the seat of the disease.
The cause of the pneumonic plague is so little known that it may be interesting to mention it here.
pneumonic plague had appeared in Manchuria, and was stalking through the land.
In the latter part of 1910 the pneumonic plague first appeared in Harbin a town in Manchuria under Chinese control.
pneumonic plague is an even more dangerous form of this disease.
pneumonic plague n.
A frequently fatal form of bubonic plague in which the lungs are infected and the disease is transmissible by coughing.