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Molecular identification by “suicide PCR” of Yersinia pestis as the agent of Medieval Black Death

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Raoult, Didier, Aboudharam, Gérard, Crubézy, Eric, Larrouy, Georges, Ludes, Bertrand, Drancourt, Michel·2000·Proceedings of the National Academy of Sciences

Abstract

Medieval Black Death is believed to have killed up to one-third of the Western European population during the 14th century. It was identified as plague at this time, but recently the causative organism was debated because no definitive evidence has been obtained to confirm the role of Yersinia pestis as the agent of plague. We obtained the teeth of a child and two adults from a 14th century grave in France, disrupted them to obtain the pulp, and applied the new “suicide PCR” protocol in which the primers are used only once. There were no positive controls: Neither Yersinia nor Yersinia DNA were introduced in the laboratory. A negative result is followed by a new test using other primers; a positive result is followed by sequencing. The second and third primer pair used, coding for a part of the pla gene, generated amplicons whose sequence confirmed that it was Y. pestis in 1 tooth from the child and 19/19 teeth from the adults. Negative controls were negative. Attempts to detect the putative alternative etiologic agents Bacillus anthracis and Rickettsia prowazekii failed. Suicide PCR avoids any risk of contamination as it uses a single-shot primer—its specificity is absolute. We believe that we can end the controversy: Medieval Black Death was plague.

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Metadata

Authors
Raoult, D., Aboudharam, G., Crubézy, E., Larrouy, G., Ludes, B., & Drancourt, M.
Venue
Proceedings of the National Academy of Sciences
Published
2000-10-31
Volume
97
Issue
23
Pages
12800-12803
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1990861039
Cited by
337
References
20
FWCI
5.94
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Molecular identification by “suicide PCR” of Yersinia pestis as the agent of Medieval Black Death. https://app.cochat.ai/papers/10.1073/pnas.220225197
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Raoult, D., Aboudharam, G., Crubézy, E., Larrouy, G., Ludes, B., & Drancourt, M. (2000). Molecular identification by “suicide PCR” of Yersinia pestis as the agent of Medieval Black Death. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.220225197

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