The WHO said it took more than three months to reach the first 100,000 confirmed cases worldwide, but only 12
days to reach the next 100,000.
While these figures are for confirmed cases, the actual number of people with coronavirus internationally is
thought to be a much higher number - as many of those with mild symptoms have not been tested and counted.
In response to the virus's spread, countries around the world are ramping up measures to try to slow it down.
Governments have halted flights from virus-hit nations, locked down towns and cities and urged people to stay at
President Donald Trump has declared a national emergency in the US and announced travel ban on European
countries, including the UK and Ireland, as well as China and Iran.
Travellers from outside the EU are also being turned away from airports and borders after the 27-country bloc
imposed a 30-day ban on entry.
Many international conferences and sporting events have also been cancelled or postponed, including Six Nations
rugby matches, Euro 2020, the Copa America and this year's meeting of G7 leaders in the US.
2. The virus has killed more people in Italy than China
Italy currently has the most confirmed cases outside China - and on Thursday surpassed China's death toll.
While Italy has about 41,000 confirmed cases compared with China's 81,000, its death toll of 3,400 exceeds
China's by more than 150.
The majority of Italy's deaths have occurred in the northern Lombardy region, which contains the city of Milan.
Hospitals there are reportedly at breaking point and retired doctors and nurses have been asked to return to
The recent jump in deaths comes despite Italian authorities imposing stringent restrictions, closing nearly all
shops, bars, hairdressers, restaurants and cafes.
The number of new confirmed cases in Italy also continue to spiral.
They have been increasing since the beginning of March, and there have been more than 20,000 new confirmed cases
in the past week.
Schools, gyms, museums, nightclubs and other venues have been shut, and people have been ordered to stay home and
seek permission for essential travel in a bid to slow the virus's spread.
The lockdown, imposed on 12 March, has now been extended beyond the original 25 March end date.
A number of airlines, including British Airways, EasyJet and Ryanair, have cancelled Italy flights until the
start of April.
3. Numbers across Europe are also rising
Other European countries have also seen steep rises in infections and deaths, and the region has become the new
epicentre of the crisis.
As well as Italy, Spain, France and Germany now have thousands of confirmed cases each.
Germany's Chancellor Angela Merkel has warned that up to 70% of its population - some 58 million people - could
However, some German virologists dispute the high figure, suggesting a worst-case scenario of 40,000 cases.
Spain, which now has the third highest number of cases outside China, brought in a state of emergency on 14
In the UK, confirmed cases stand at more than 3,269, and 144 people have died.
On Monday, Prime Minister Boris Johnson announced a shift in strategy, urging everyone in the UK to avoid unnecessary
social contact, work from home where possible, and stay away from pubs and restaurants.
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