What Killed more People than WWI in 1918?

TL;DR

The Spanish Flu pandemic, caused by the influenza virus H1N1, infected 500 million people and resulted in a death toll ranging from 20 to 100 million, making it deadlier than both World War I and World War II combined.

Transcript

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Key Insights

• 🔶 The Spanish Flu infected a large portion of the world's population, sparing only Antarctica, and resulted in a death toll ranging from 20 to 100 million.
• 🧑 The virus disproportionately affected healthy young adults, with around 50% of deaths occurring in people in their 20s and 30s.
• 🇨🇳 The exact origin of the virus is still debatable, with possible precursor events in northern France, China, and Haskel County, Kansas.
• ☠️ The second wave of the pandemic, from August to December 1918, was the deadliest stage, resulting in a high rate of mortality.
• 🥳 The Spanish Flu caused a significant drop in life expectancy, overwhelmed hospitals and morgues, and led to a decline in birth rates in some countries.
• 😳 Attempts to develop a vaccine were hindered by the belief that the flu was bacterial and the lack of understanding of aspirin dosing and poisoning.
• 🛩️ The pandemic had long-lasting impacts, including potential connection to Woodrow Wilson's illness during the Treaty of Versailles negotiations and smaller outbreaks in the 1920s.

Questions & Answers

Q: How many people were estimated to have fallen ill during the Spanish Flu pandemic?

Approximately 500 million people, or around one-third of the world's population at the time, fell ill during the pandemic.

Q: What was the death toll of the Spanish Flu pandemic?

Conservative estimates place the death toll at 20 million people, but it is widely accepted that the more likely figure lies between 50 to 100 million, making it deadlier than both World War I and World War II combined.

Q: Why did the Spanish Flu disproportionately affect healthy young adults?

There are two proposed theories for this. One theory suggests that the virus sometimes triggered an extreme immune system reaction, known as a cytokine storm, which resulted in death due to drowning from the lungs filling up with bodily fluids. The other theory, known as original antigenic sin, suggests that an individual's lifelong immune response to flu is determined by their earliest encounter with a flu virus, and for many young adults in 1918, this would have occurred during an earlier epidemic, the Russian flu of 1889 to 1890.

Q: Why was the Spanish Flu called the Spanish Flu if it didn't originate in Spain?

The virus was named the Spanish Flu because Spain, being neutral during World War I, did not have reporting restrictions in place like countries participating in the war. Spain's reporters were free to write stories about the contagion, and the association of the virus with the country was further solidified when the Spanish king fell ill.

Summary & Key Takeaways

• The Spanish Flu, also known as the H1N1 virus, spread across the world in three waves from 1918 to 1920, infecting rich and poor, civilians and soldiers alike.

• Symptoms of the Spanish Flu included severe headache, high fever, sore throat, body aches, and later, blue discoloration of extremities and bleeding from the ears and nose.

• The virus disproportionately affected healthy young adults, with 50% of deaths occurring in people in their 20s and 30s.