Covid-19 is continuing to spread around the world, with around 220 million confirmed cases and 4.5 million deaths across almost 200 countries.
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Confirmed cases have been rising steeply since the middle of last year, but the true extent of the first outbreak in 2020 is unclear because testing was not then widely available.
The 100 millionth Covid case was recorded at the end of January - about a year after the first officially diagnosed case of the virus.
Who has vaccinated the most?
Of the 196 countries and territories administering vaccines and publishing rollout data, 67 are high-income nations, 103 are middle-income and 26 low-income.
The map below, using figures collated by Our World in Data - a collaboration between Oxford University and an educational charity - shows the total number of doses given per 100 people, mostly first doses.
Overall, China and India have administered the highest number of doses, with more than two billion and almost 670 million respectively. The US ranks third, with over 372 million.
But when breaking the figures down by doses per 100 people in countries with a population of at least one million, the United Arab Emirates, Uruguay and Israel top the list.
Most countries are prioritising the over-60s, health workers and people who are clinically vulnerable.