Related Experiment Video
Updated: Mar 19, 2026

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Diagnosis of Ecto- and Endoparasites in Laboratory Rats and Mice
Published on: September 6, 2011
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Diseases Transmitted by Man's Worst Friend: the Rat
1Division of Comparative Medicine, MIT, Cambridge, MA 02139.
Microbiology Spectrum
|June 24, 2016
Summary
Rats have historically spread devastating diseases like the plague, causing millions of deaths and impacting civilizations for centuries. This historical context highlights the long-standing conflict between humans and rats due to disease transmission.
Area of Science:
- Historical epidemiology
- Zoonotic diseases
- Public health
Background:
- Rats have been implicated in numerous pandemics throughout history, most notably the plague.
- The Black Death, caused by plague bacilli carried by rats, resulted in millions of deaths in Europe during the Middle Ages.
Observation:
- Multiple plague pandemics, occurring in distinct historical periods, have significantly impacted human civilizations.
- Beyond plague, rats serve as vectors for various other diseases transmissible to humans.
Findings:
- The historical relationship between humans and rats is characterized by conflict, largely driven by disease transmission.
- The Black Death pandemic alone caused catastrophic mortality across Europe.
Implications:
- Understanding the historical role of rats in disease spread is crucial for contemporary public health strategies.
- The persistent threat of zoonotic diseases underscores the need for ongoing vigilance and research into rodent-borne illnesses.
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