It's no surprise the virus is far spreading on.

More cases here in the U.

K were expected, but this time there is a significant development.

They acquired it in Asia, but not in China.

On dhe at the moment, the great majority off the cases in the world are still in China.

The great majority there are a few in other countries on our view is because of that.

It's probably now prudent to slightly widen the geographical area where, firstly, doctors in the U.

K in the N hs know that they should test people.

The patient's identity is being closely protected.

We know very little about exactly where and how they came into contact with the virus.

Way do know one thing that there's no connection between this latest case.

On the other two known cases, a student from York University and a family member were identified last week after staying at this hotel.

They are known to have contracted the virus in China.

Now, the advice to N hs doctors and all frontline staff will have to be updated in the past, they've only have to worry about people who have traveled from Wuhan in China or who have been in contact with people who have traveled to that region.

Now they'll have a much wider geographical region to deal with than less.

Now includes China, Thailand, Japan, the Republic of Korea, Hong Kong, Taiwan, Singapore, Malaysia on Macau.

The Chinese are sensitive to criticism accusations that they're withholding information or are downplaying the number of infected on dead.

China's ambassador to Britain urged Western countries to stop creating unnecessary panic.

He did.

I hope that the government's off all countries, including the UK, should understand and support China's efforts.

Respect the professional advice off the blue which oh, China is sharing Maur information than it did during the deadly 2003 SARS outbreak.

But it's not officially confirming the death of Dr Lee Wen liang, who was one of the first to warn of the dangers of this outbreak at the end of December.

It was silenced by authorities and forced to return to work where he caught the virus from a patient, his death adding to the number of fatalities rising daily we don't know the source off the outbreak.

We don't know what it's natural.

Preserve our is, and we don't properly understand it's transmissibility or severity to defeat this outbreak.

We need answers to all those questions.

We are learning more about the virus.

But much remains unknown.

Pictures like this of medics and has Matt suits taking away a patient suspected of having Corona virus in York will do little to ease nerves in the city and elsewhere.

The patient later tested negative that the government is stressing once again that it's plans are robust and the country is fully prepared to deal with this epidemic.

Ashish Joshi Sky News.