Over the weekend, the number of people infected with a new virus in China has tripled.

The outbreak of this coronavirus has spread from Wuhan to other major cities.

But what exactly is this new virus and how easy is it to contract?

You have been sending BBC News your questions about coronavirus.

BBC News online’s health editor Michelle Roberts answers your questions.

Is it possible to vaccinate in order to prevent this respiratory illness? – Hans Friedrich

At the moment, there is no vaccine that can protect people against this type of coronavirus.

It is a new strain that hasn’t been seen in humans before, which means doctors still have lots to learn about it.

I am travelling to Beijing and Shanghai in February and would like to know

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