As you may have heard, stock markets worldwide are suffering their worst week since the global financial crisis of 2008. But why should it matter to you?

"Almost everybody is an investor. Your state pension is funded in part by the stock market," Emma Wall, head of investment analysis at Hargreaves Lansdown, explained to the BBC.

"If you work in a place that employs more than one person, you will also be an investor as since 2012, companies are duty-bound to offer all employees workplace pensions, and those are invested in the stock market, among other things."

However, she advised caution when seeing markets turn volatile due to political uncertainty, epidemics or natural disasters.

"Stock markets by their very nature go up and down in value and sometimes if you are focused on the long-term, as you would be when saving for retirement, the best thing to do would be to try to ignore it," she added.

Find out more about the stock markets falling here.

People planning to head to big concerts, conferences or sports games in Switzerland in the coming days will have to think again as the government has just announced that it's suspending all events involving more than 1,000 participants.

The ban comes into immediate effect and will apply at least until 15 March, the government said in a statement.

Switzerland has 15 confirmed cases and more than 100 people there are in quarantine. The country borders northern Italy, which has seen the biggest cluster of cases in Europe.

Our producer in Seoul has been speaking to a nurse in Daegu, South Korea, about what it's like to work long hours in protective clothing. Here's what she told us:

"After wearing the protective suit for more than hour, the pressure of the mask and the strong tension of the rubber bands hurt your face, nose, back of the ear. There have even been staff who had runny sores. It also hurts your head because it is tightly wraps around your head.

"You sweat a lot and can get dizzy.

"All the medical staff are working hard despite the difficulties. Especially nurses are the ones who are in contact with the patients the most, which uses a lot of our physical energy. We hope everyone keeps the quarantine prevention measures and all return to their jobs in good health."

China has now recorded almost 80,000 cases of the coronavirus. A total 2,790 have died, the majority in Hubei province.

However, more cases have been reported outside than inside China for the past two days.

Three more cases of the coronavirus have been confirmed in the UK, including the first one in Wales.

This brings the total number of cases in the UK to 19 - following the first confirmed case in Northern Ireland on Thursday.

You can read more about this here.

Dan Johnson
BBC News

Nine guests have left the hotel in Tenerife locked down because of coronavirus outbreak. They are Canary Islands residents who will go to their homes.

They are part of the group of 130 guests declared low risk by the island’s health minister because they only arrived at the hotel on Monday, after the four Italians who tested positive for the virus had left. They were driven out of the H10 Costa Adeje Palace Hotel early on Friday morning to protect their privacy.

Officials say the other 120 “low risk” travelers can leave today or tomorrow, after certain checks and procedures. They’ll be monitored in their countries of origins, according to guarantees island officials say were given in a meeting yesterday between local government and consulates.

We know there are 11 nationalities among the 130. The other guests who arrived before Monday - another 600 - are expected to be monitored in the hotel until 10 March. Last night Jet 2 told British holidaymakers it would not fly anybody home until they’d completed the quarantine period or tested negative for the virus.

Japanese authorities have announced that all schools in the country will be closed until 8 April in an effort to stem the spread of the virus. But not all are happy about this move.

"My company doesn't offer teleworking, so I'm going to have to take days off," one mother told news agency AFP. "Financially, it's very hard."

Read more on the closure here.

PA Media

Newcastle United have introduced a training ground handshake ban in an attempt to guard against the spread of coronavirus.

The club has put a stop to a morning ritual of players and staff shaking hands as fears over the spread of the virus increase.

Head coach Steve Bruce said: "There's a ritual here that everybody shakes hands with everybody as soon as we see each other every morning - we've stopped that on the advice of the doctor.

"Were like everybody else. Thankfully, we've got a superb doctor here and he will keep us informed of what we have to do.

"We're like everybody else, we're glued to the TV for where it's going to go next and let's hope it doesn't get any worse in this country."

Image source, Getty Images

The first coronavirus case has been confirmed in Wales, in a patient who had returned from Italy - taking the total number of UK cases to 17

If you're just joining us, here's a look at some of the latest big updates about the coronavirus that we've been covering:

• Stock markets around the world are suffering big declines amid investor concerns over the coronavirus
• The first case of Covid-Nineteen in Sub-Saharan Africa has been reported in Nigeria
• Iran has cancelled Friday prayers in major cities
• Mongolia's president has gone into isolation
• A Chinese official says coronavirus patients who were discharged from hospital but later tested positive again have been found not to be infectious
• Britons stuck in a hotel in Tenerife face a long wait, with airline Jet2 saying they will not be flown home until next month unless they have tested negative
• A pet dog owned by a coronavirus patient in Hong Kong has tested "weak positive" for the virus
• South Korea has reported 2,337 cases - the largest number outside China

Yemisi Adegoke
BBC News, Lagos

News of the first confirmed case of coronavirus in Nigeria has prompted fierce debate on social media, with #CoronavirusNigeria now the top Twitter trend across the country.

Nigerian authorities have urged the public to remain calm.

But some people say they fear the country, which is already battling an outbreak of Lassa fever, may struggle to cope if coronavirus spreads:

Others say that the quick response of health authorities to the 2014 Ebola outbreak is proof the country will be able to contain the threat:

Nigerians are also encouraging each other to take basic preventive measures to protect themselves, such as washing hands, external.

That's one of the key steps recommended by the World Health Organization, external. Here's their full list:

• Wash your hands frequently
• Maintain social distancing
• Avoid touching eyes, nose and mouth
• Practice respiratory hygiene
• If you have fever, cough and difficulty breathing, seek medical care early
• Stay informed and follow advice given by your healthcare provider.

Nigeria is the first country in sub-Saharan to record a positive case of coronavirus, after authorities confirmed an Italian citizen, who flew into Lagos from Milan, tested positive for the disease.

Egypt and Algeria have also recorded positive cases.

Image source, AFP

Two more cases of the virus have been confirmed in Kuwait, said a Reuters report quoting a Health Ministry official.

There are now 45 cases of the virus in the country. Those infected had either travelled to Iran or been infected by people who went there.

Following the trend of stock markets around the world, European shares dropped by 3% as they opened on Friday.

Germany's Dax index opened with a drop of 3.6% and France's Cac 40 index fell 3.1%.

The pan-regional STOXX 600 is on track to record its biggest weekly drop since the peak of the 2008 financial crisis.

Travel, leisure and technology are among the sectors recording the biggest declines.

Investors are worried the coronavirus impact could spark a global recession, and news of more cases has raised concerns of a much bigger economic impact than previously anticipated.

Asian stock markets tumbled on Friday, extending a collapse in New York and Europe.

Shanghai and Seoul were among the bourses that fell by more than 3%.

Japan's benchmark Nikkei 225 dropped by an unusually wide margin of 3.67%, while Hong Kong's Hang Seng was down by more than 2%.

Losses fueled by worries over the economic impact of the coronavirus mean it has been one of the worst weeks for global stocks since the 2008 financial crisis.

Read more about the losses in global stock markets.

Even world leaders are not spared from coronavirus quarantine measures - Mongolian President Khaltmaagiin Battulga has begun 14 days in isolation after returning from a one-day trip to neighbouring China.

Mr Battulga was the first head of state to visit China since the coronavirus outbreak began. He went to the country to meet with President Xi Jinping to discuss efforts to combat the infection.

But state news agency Monstame said Mr Battulga and his delegates would now spend two weeks in isolation as a "precautionary measure".

Mongolia has restricted travel from its capital Ulaanbaatar to other provinces until Tuesday in a bid to curb the spread of the new coronavirus.

Want to avoid touching elevator buttons and spreading germs? This building in Seoul thinks it has come up with the solution: toothpicks.

South Korea has reported 315 more new cases of the coronavirus - bringing the total number of cases in the country to 2,337, the largest national total outside China.

Image source, Getty Images

UK shares have plummeted at the open, as the global market sell-off shows no sign of slowing up.

Shortly after opening the FTSE 100 index was down 224.14 points, or 3.3%, at 6,572.26.

The FTSE 250 index fell 527.74 points, or 2.7%, to 19,255.71.

Recovered coronavirus patients - who were discharged from hospital but later tested positive again - have been found not to be infectious, according to an official from China's National Health Commission.

Britons confined to a hotel in Tenerife will not be flown home until next month unless they have tested negative, airline Jet2 has said.

Some 168 Britons are among 700 guests who have been quarantined in the Costa Adeje Palace in Tenerife after at least four guests, including an Italian doctor, were diagnosed with coronavirus.

Here's more on the situation in Tenerife.