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Infection Trajectory: See Which Countries are Flattening Their COVID-19 Curve

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NOTE: This chart updates daily with new data. Also, the search button in the lower–left corner allows filtering of specific countries.

At the outset of 2020, the world looked on as China grappled with an outbreak that seemed be spiraling out of control.

Two months later, the situation is markedly different. After aggressive testing and quarantine efforts, China’s outbreak of Novel Coronavirus (COVID-19) appears to be leveling off.

Now, numerous countries around the world are in the beginning stages of managing their own outbreaks. March 15th, 2020, marked a significant statistical milestone for this, as confirmed cases of COVID-19 outside of China surpassed the Chinese total.

The tracker above, by Our World in Data, charts the trajectory of the growing number of countries with more than 100 confirmed cases of COVID-19. As the number of new infections reported around the world continues to grow, which countries are winning the battle against COVID-19, and which are still struggling to slow the rate of infection?

What’s Your National Infection Trajectory?

As of publishing time, 39 countries have passed the threshold of 100 confirmed cases, with many more countries on the cusp. By comparing infection trajectories from the 100 case mark, we’re able to see a clearer picture of how quickly the virus is spreading within various countries.

A rapid “doubling rate” can spell big trouble, as even countries with advanced healthcare systems can become overwhelmed by the sheer number of cases. This was the case in the Lombardy region of Italy, where hospitals were overloaded and an increasing number of medical staff are under quarantine after testing positive for the virus. Nearly 10% of COVID-19 patients in Lombardy required intensive care, which stretched resources to their breaking point.

Other countries are looking to avoid this situation by “flattening the curve” of the pandemic. In other words, preventing and delaying the spread of the virus so that large portions of the population aren’t sick at the same time.

flattening the covid19 curve

Original concept by Drew Harris

Everything’s Canceled

While all the countries on this tracker are united behind a common goal – stamping out COVID-19 as soon as possible – each country has its own approach and unique challenges when it comes to keeping their population safe. Of course, countries that are just beginning to experience exponential growth in case numbers have the benefit of learning from mistakes made elsewhere, and adopting ideas that are proving successful at slowing the rate of infection.

Many jurisdictions are implementing some or all of these measures to help flatten the curve:

  • Quarantining
  • Encouraging social distancing
  • Encouraging working from home
  • Closing schools and other institutions
  • Placing hard limits on the size of crowds at events

The following chart explains why this last measure is critical to limiting the spread of the virus.

event risk assessment chart

View the interactive Event Risk Assessment Tool here.

In scenario B above, which assumes just 20,000 active cases of COVID-19 in the U.S., there’s nearly a 50% chance an infected person will be attending a 10,000 person conference or sporting event. This is precisely the reason why temporary limits on crowd size are popping up in many jurisdictions around the world.

Direct losses due to canceled tech conferences alone, such as SXSW and the Electronic Entertainment Expo, have already surpassed the $1 billion mark, but despite the short-term economic pain of cancellations and decreased entertainment spending, the costs of business-as-usual could be incalculable.

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Demographics

Mapped: Population Growth by Region (1900-2050F)

In this visualization, we map the populations of major regions at three different points in time: 1900, 2000, and 2050 (forecasted).

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Map of Population Growth by Region

Mapping Population Growth by Region

This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.

In fewer than 50 years, the world population has doubled in size, jumping from 4 to 8 billion.

In this visualization, we map the populations of major regions at three different points in time: 1900, 2000, and 2050 (forecasted). Figures come from Our World in Data as of March 2023, using the United Nations medium-fertility scenario.

 

 

Population by Continent (1900-2050F)

Asia was the biggest driver of global population growth over the course of the 20th century. In fact, the continent’s population grew by 2.8 billion people from 1900 to 2000, compared to just 680 million from the second on our list, Africa.

Region190020002050F
Asia931,021,4183,735,089,7755,291,555,919
Africa138,752,199818,952,3742,485,135,689
Europe406,610,221727,917,165704,398,730
North America104,231,973486,364,446679,488,449
South America41,330,704349,634,344491,078,697
Oceania5,936,61531,223,13357,834,753
World 🌐1,627,883,1306,149,181,2379,709,492,237

China was the main source of Asia’s population expansion, though its population growth has slowed in recent years. That’s why in 2023, India surpassed China to become the world’s most populous country.

Southeast Asian countries like the Philippines and Indonesia have also been big drivers of Asia’s population boom to this point.

The Future: Africa to Hit 2.5 Billion by 2050

Under the UN’s medium-fertility scenario (all countries converge at a birthrate of 1.85 children per woman by 2050), Africa will solidify its place as the world’s second most populous region.

Three countries—Nigeria, Ethiopia, and Egypt—will account for roughly 30% of that 2.5 billion population figure.

Meanwhile, both North America and South America are expected to see a slowdown in population growth, while Europe is the only region that will shrink by 2050.

A century ago, Europe’s population was close to 30% of the world total. Today, that figure stands at less than 10%.

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