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ourworldindata
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03/27/26
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Today’s edition covers:
→ Which animals actually kill the most people → The human cost of unsafe abortions → Why cheap waste management is key to stopping plastic pollution → How modern chicken breeds grow faster — but at the cost of animal welfare ...and more
What are the world’s deadliest animals? — Infographic combining a large treemap and a ranked bar list showing estimates for the number of humans killed by different animals in 2023.

Key insight: Mosquitoes are far deadlier than any other animal with an estimated 760,000 human deaths; humans are next with 600,000 deaths; snakes follow with 100,000.

Other animals and estimated deaths listed, roughly in descending order:
- Dogs: 40,000
- Freshwater snails (Schistosomiasis): 14,000
- Kissing bugs (Chagas disease): 8,000
- Sandflies (Leishmaniasis): 5,000
- Roundworms (Ascariasis): 5,000
- Scorpions: 3,000
- Tapeworms (Cysticercosis): 2,000
- Tsetse flies (Trypanosomiasis): 1,500
- Elephants: 1,000
and others

Data sources listed in the footer: Institute for Health Metrics; World Health Organization; CrocAttack; IUCN; ISAF; and others.
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zero7clock
11/11/25
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We love you! I always recommend your website to my students
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11/11/25
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Great to hear that. ☺️
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07/23/25
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(This Data Insight was written by Simon van Teutem.)
Smokers are about 21 times more likely to die from lung cancer than people who never smoked, and they face increased risks from over a dozen other diseases. I know people who died from smoking; you probably do, too.
In 2008, the World Health Organization created a set of tobacco control policies with different tiers, the highest of which are considered “best practices” — they are listed on the chart.
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07/23/25
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(This Data Insight was written by Simon van Teutem.)
Smokers are about 21 times more likely to die from lung cancer than people who never smoked, and they face increased risks from over a dozen other diseases. I know people who died from smoking; you probably do, too.
In 2008, the World Health Organization created a set of tobacco control policies with different tiers, the highest of which are considered “best practices” — they are listed on the chart.
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