The latest number of coronavirus cases in the UK has soared to 1,950, the Department of Health has confirmed.

As Tuesday afternoon (March 17), a total of 50,442 people have been tested.

Coronavirus: Live updates on the situation in Herefordshire

The figures come as chief scientific adviser Sir Patrick Vallance said the UK may have up to 55,000 coronavirus cases already.

During a meeting at the House of Commons' health committee, Sir Patrick told MPs that the UK should start to see rates of infection come down in two to three weeks.

He added it would be a 'good outcome' if the number of coronavirus-related deaths across the country could be kept below 20,000.

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In Scotland, a second patient who was diagnosed with Covid-19 had died.

Meanwhile, Britons have been advised against all non-essential travel.

Coronavirus: the facts by the World Health Organisation and the NHS

What is coronavirus?

COVID-19 is a respiratory illness that can affect lungs and airways. It is caused by a virus called coronavirus.

What caused coronavirus?

The outbreak started in Wuhan in China in December 2019 and it is thought that the virus, like others of its kind, has come from animals.

How is it spread?

As this is such a new illness, experts still aren’t sure how it is spread. But similar viruses are spread in cough droplets. Therefore covering your nose and mouth when sneezing and coughing, and disposing of used tissues straight away is advised. Viruses like coronavirus cannot live outside the body for very long.

What are the symptoms?

The NHS states that the symptoms are: a dry cough, high temperature and shortness of breath - but these symptoms do not necessarily mean you have the illness. Look out for flu-like symptoms, such as aches and pains, nasal congestion, runny nose and a sore throat. It’s important to remember that some people may become infected but won’t develop any symptoms or feel unwell.

What precautions can be taken?

Washing your hands with soap and water thoroughly. The NHS also advises to cover your mouth and nose with a tissue or your sleeve (not your hands) when you cough or sneeze; put used tissues in the bin immediately and try to avoid close contact with people who are unwell. Also avoiding touching eyes, nose and mouth unless your hands are clean.

Government advice

As of March 12, the Government has moved into the "delay" phase of its plan to tackle coronavirus. Advice is that anyone with a continuous cough or high temperature should self-isolate for seven days. People over 70 have been advised not to go on cruises and schools advised to cancel trips abroad, though schools remain open.

Should I avoid public places?

Most people who feel well can continue to go to work, school and public places and should only stay at home and self isolate if advised by a medical professional or the coronavirus service.

What should I do if I feel unwell?

Don’t go to your GP but instead call NHS 111 or look online at the coronavirus service that can tell you if you need medical help and what to do next.

When to call NHS 111

NHS 111 should be used if you feel unwell with coronavirus symptoms, have been in a country with a high risk of coronavirus in the last 14 days or if you have been in close contact with someone with the virus.