The spread of the 1781 influenza outbreak across Europe is an example of a pattern referred to as

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The term "contagious diffusion" refers to the spread of a disease or cultural trait through direct contact, often along trade routes or transportation networks. In the case of the 1781 influenza outbreak, it is believed that the disease spread rapidly across Europe through contact between people traveling by foot, horse, or ship.

The Spread of the 1781 Influenza Outbreak Across Europe Is