The accompanying chart, which will update every morning, allows you to follow the disease’s progression by country. It uses what’s called a logarithmic scale — exponential growth at different rates will appear as straight lines of different steepness. The steeper the line, the faster the total number of coronavirus deaths is doubling.
The number of deaths from the illness known as Covid-19 provides one of the most reliable measurements of the pandemic’s impact around the world. Testing rates for the virus differ so much that the number of positive results in a given country is not a precise barometer of how many people are afflicted. But deaths also lag infections substantially; evidence from China suggests that most patients who died from Covid-19 were infected for a month before their death.
See the spread of coronavirus on a map.
The data are drawn from The New York Times’s aggregation of global coronavirus statistics. To make it easier to compare the trajectories of the epidemic by nation, the counts in the chart all begin with a country’s 25th death. The disease has reached different countries at different times, but comparing them all in this way can show whether the disease is progressing faster or slower in various places once it arrives.
Deaths in U.S. States
Similar tracking shows how the disease is progressing in different U.S. states. Deaths so far have been highest in the states of Washington and New York, the sites of the country’s first major outbreaks. But the numbers are growing in other parts of the country as well. As death totals in any state reach 10, they will be added to this chart. (Since many parts of the U.S. are in an earlier stage of the epidemic, we’re using a lower threshold for this chart — we expect to adjust this in the days ahead.)