“The untreated pneumonic form of the disease (in which it is inhaled into the lungs) has a mortality rate close to 100% and can kill within 24 hours. Let’s pretend that you are one of those unlucky people who catches bubonic plague. ... Y. pestis can detect the temperature outside.Feb 22, 2014”
“Pneumonic plague is the most serious form of the disease and is the only form of plague that can be spread from person to person (by infectious droplets).”
If this city is not cleaned up, the only way it can be dealt with is by burning — as in burned to the ground and destroyed completely.
That is the only way to keep disease from spreading.