Plague

The plague is a deadly infectious disease that is caused by a bacteria usually carried by some rodents.

In 1992, there was an outbreak of plague rats in the dark alleyways off Knockturn Alley, in London. If bitten, a human would have become infected.

Appearances

 * Harry Potter and the Chamber of Secrets (video game)
 * Harry Potter and the Prisoner of Azkaban (video game)