Did Researchers Find Scarlet Fever in an Ancient Mummy?
A remarkable discovery from a mummified skull in Bolivia is changing what scientists believed for decades about the origins of scarlet fever in the Americas. Researchers now say evidence suggests that scarlet fever in the Americas may have existed long before European explorers arrived.
The finding comes from a single ancient tooth taken from a naturally preserved mummy that lived centuries before Christopher Columbus reached the New World in 1492. Scientists believe this discovery could reshape the medical history of infectious diseases in Indigenous populations.
What Is Scarlet Fever?
Scarlet fever is a bacterial illness caused by Streptococcus pyogenes, the same bacterium responsible for strep throat.
The infection mainly affects children and usually causes fever, sore throat, skin rash, and a bright red tongue. Before antibiotics became available, scarlet fever caused serious complications, including hearing loss, vision problems, and even death.
For many years, historians and medical experts believed European colonists introduced scarlet fever to Indigenous communities in the Americas during the colonial period. That theory has now come under fresh scrutiny.
Ancient Tooth Reveals Unexpected Evidence
Scientists from research institutes in Italy and the United Kingdom examined DNA preserved inside the tooth of a male mummy discovered in the Andean region of present day Bolivia.
Radiocarbon dating showed the individual lived between 1283 and 1383 AD. This places the infection more than 100 years before Columbus crossed the Atlantic.
The study, published in Nature Communications, identified genetic traces linked to Streptococcus pyogenes. Researchers say the ancient bacterial strain carried several disease causing genes that are also present in modern strains.
This discovery strongly suggests that scarlet fever in the Americas may not have arrived with European settlers after all.
Scientists Trace Possible Origins
Researchers believe the bacterial ancestor may have entered the Americas thousands of years earlier through human migration routes connecting Siberia and Alaska across the ancient Bering land bridge.
Genetic analysis showed the ancient strain likely separated from its closest relatives nearly 10,000 years ago. That timeline supports the idea that the bacterium evolved in the Americas long before colonial contact.
Moreover, scientists say this finding adds to growing evidence that some infectious diseases thought to be European imports may have already existed in Indigenous populations.
Recent ancient DNA studies have raised similar questions about diseases such as Syphilis and Leprosy.
Decoding a 700 Year Old Infection
Extracting genetic material from the mummy’s tooth was extremely challenging because the DNA had degraded over centuries.
Researchers explained that rebuilding the bacterial genome felt similar to solving a puzzle without knowing the final image. Even so, they successfully reconstructed enough genetic information to identify important virulence genes linked to throat infections.
These genes help bacteria invade the body and trigger disease. Their presence confirms the ancient strain was not harmless bacteria but a true human pathogen.
Conclusion
Although antibiotics now help treat scarlet fever effectively, health experts continue to monitor the infection closely because some modern bacterial strains are becoming increasingly resistant to treatment.
Understanding the ancient history of the disease may help scientists track how harmful bacteria evolve over time. It may also improve future research into antibiotic resistance and infectious disease outbreaks.
Most importantly, the new evidence challenges a long-accepted belief about colonial-era diseases and Indigenous populations. The discovery shows that the medical history of the Americas may be far more complex than previously understood.
As researchers continue studying ancient DNA, more assumptions about the origins of infectious diseases could soon change.
Source: Inputs from various media Sources
I’m a pharmacist with a strong background in health sciences. I hold a BSc from Delhi University and a pharmacy degree from PDM University. I write articles and daily health news while interviewing doctors to bring you the latest insights. In my free time, you’ll find me at the gym or lost in a sci-fi novel.
- Health News and Updates,People Forum
- 26 May 2026
- 22:00
