Tag: Our World in Data

The Spanish flu: The global impact of the largest influenza pandemic in history

Mary Pat Campbell

Link: https://ourworldindata.org/spanish-flu-largest-influenza-pandemic-in-history

Graphic:

Excerpt:

Estimates suggest that the world population in 1918 was 1.8 billion.

Based on this, the low estimate of 17.4 million deaths by Spreeuwenberg et al. (2018) implies that the Spanish flu killed almost 1% of the world population.9

The estimate of 50 million deaths published by Johnson and Mueller implies that the Spanish flu killed 2.7% of the world population. And if it was in fact higher – 100 million as these authors suggest – then the global death rate would have been 5.4%.10

The world population was growing by around 13 million every year in this period which suggests that the period of the Spanish flu was likely the last time in history when the world population was declining.11

Author(s): Max Roser

Publication Date: 4 Mar 202

Publication Site: Our World in Data

Charted: The Global Decline of Fertility Rates

Mary Pat Campbell

Link: https://www.visualcapitalist.com/cp/charted-the-global-decline-of-fertility-rates/

Graphic:

Excerpt:

Over the last 50 years, fertility rates have dropped drastically around the world. In 1952, the average global family had five children—now, they have less than three.

This graphic by Pablo Alvarez uses tracked fertility rates from Our World in Data to show how rates have evolved (and largely fallen) over the past decades.

What’s The Difference Between Fertility Rates and Birth Rates?

Though both measures relate to population growth, a country’s birth rate and fertility rate are noticeably different:

  • Birth Rate: The total number of births in a year per 1,000 individuals.
  • Fertility Rate: The total number of births in a year per 1,000 women of reproductive age in a population.

Author(s): Pablo Alvarez

Publication Date: 10 Jun 2022

Publication Site: Visual Capitalist