Who was infected with the bubonic plague

Plague has occurred in people of all ages (infants up to age 96), though 50% of cases occur in people ages 12–45.

Explanation:

Bubonic plague is mainly spread by infected fleas from small animals. It may also result from exposure to the body fluids from a dead plague-infected animal. In the bubonic form of plague, the bacteria enter through the skin through a flea bite and travel via the lymphatic vessels to a lymph node, causing it to swell.