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Pneumonic plague can be
. It attacks the
and can cause death 18 to 24 hours after symptoms begin. It is highly contagious, so it can spread
. It can move from person to person through the
when an infected person coughs or sneezes. The disease can be treated with
. However, antibiotics work best when they are given as soon as
appear. Pneumonic plague is different from COVID-19, which is caused by a
and not a bacterium. COVID-19 spreads much more easily around the
than plague. Microbiologist Dr Simon Clarke told the BBC: "Pneumonic plague can spread from
to person, and that is why there is the
around this."