Covid-19 is continuing to slot spread around the world, with more than 170 million confirmed cases and 3.5 million deaths across nearly 200 countries.
Confirmed cases have been rising steeply since the middle of last year, but the true extent of the first outbreaks 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?
Several coronavirus vaccines have been approved for use, either by individual countries or groups of countries, such as the European Union and the World Health Organization (WHO).
Of the 192 countries and territories administering vaccines and publishing rollout data, 67 are high-income nations, 101 are middle-income and 24 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 the US have given the most doses, with about 780 million and 300 million respectively, while India has administered nearly 230 million so far.
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, Israel and Bahrain top the list.