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79
Mostly True China

The text claims that during WWII, the Japanese used insects to spread the Bubonic Plague in China, causing epidemic outbreaks.

Evidence corroborates the claim that during WWII, the Japanese military, particularly Unit 731, used fleas infected with the Bubonic Plague in biological attacks on China, including notable events such as the 1940 attack on Ningbo. Multiple sources, including Wikipedia and The Guardian, confirm these events, lending credibility to the claim. This use of biological warfare is part of a well-documented history of Japan's wartime activities.

April 23, 2026 Language: en 1 claim analyzed

Individual Claims

79
Mostly True History
During WWII, the Japanese bombed China with fleas and other insects carrying the Bubonic Plague.
The claim is supported by historical evidence indicating that during WWII, Japan's Unit 731 launched biological warfare attacks using plague-infected fleas against China. The Ningbo attack of 1940 is one such documented event, confirmed by multiple sources, including Wikipedia and The Guardian.
Fact Check Score None
Fact Check Weight 0
Web Consensus Score 100
Web Consensus Weight 50
Source Quality Score 70
Source Quality Weight 25
Llm Reasoning Score 70
Llm Reasoning Weight 25
Weighted Total 79
Evidence Summary Multiple web sources confirm Japan's use of plague-infected fleas against China during WWII.

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