However, modern-day bubonic plague can also become serious if not treated on time, and people need to see a doctor as soon as possible. Register now for one of the Evening Standard’s newsletters.

In the 14th century, before treatment was available, bubonic plague killed 50 million people in Europe and became known as the "Black Death." But in modern times, bubonic plague is rare affecting ...

and in 19th century Asia—outbreaks have persisted to modern day. There are two main forms of plague infection: bubonic, which ...