Bacteria Found in Women’s Upper Reproductive Tracts

A new study identifies microorganisms residing in the human fallopian tubes and uterus, but some researchers are skeptical of the findings.

Written byDiana Kwon
| 3 min read

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ISTOCK, KINWUN

Scientists have long known that in healthy humans, a diverse universe of microbes exists in the vagina. But the existence of bacteria in women’s upper reproductive tract, which includes the uterus and fallopian tubes, remains controversial. A new study, published today (October 17) in Nature Communications, reports that even in the absence of infection, distinct communities of microbes live in these areas.

“The question about whether there are bacteria in the reproductive tract has been on the table for several years at least,” says Larry Forney, a microbiologist at the University of Idaho who was not involved in the work. “I think it’s a pretty strong study, and I think people will take it for what it is, which is a good, initial effort.”

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  • Diana is a freelance science journalist who covers the life sciences, health, and academic life. She’s a regular contributor to The Scientist and her work has appeared in several other publications, including Scientific American, Knowable, and Quanta. Diana was a former intern at The Scientist and she holds a master’s degree in neuroscience from McGill University. She’s currently based in Berlin, Germany.

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