In the 14th Century, the Black Death wiped out up to half the population of Europe. So, no wonder world leaders, including Donald Trump, are keeping a careful watch on a plague scare in Eastern Russia.
One laboratory worker from a plague research facility in Siberia has died, with fears they may have been exposed to pneumonic plague – the most virulent and dangerous form of the disease. A further 200 people were placed in quarantine.
With the Covid pandemic still fresh in people’s minds, what is pneumonic plague and how worried should we be about a potential outbreak?
Niall Paterson speaks to Sky’s science and medical correspondent Thomas Moore.
Have you got a question for Niall? Email us: why@sky.uk
