Blood type A people may be more likely to get traveler's diarrhea

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A new study has found that a certain strain of E. coli is more likely to cause traveler's diarrhea in people with blood type A.

According to the study published on May 17 in the Journal of Clinical Investigation, the diarrhea-causing strain of E. coli secretes a protein that attaches to sugar molecules on type A blood cells, but not type B or O cells.

According to Science News, researchers from Washington University School of Medicine and Johns Hopkins University also found these sugar molecules are also present in the gut linings of people with blood type A.

Scientists had 106 healthy volunteers drink water laced with a strain of E. coli extracted from a person in Bangladesh with severe diarrhea.

After five days, 81 percent of the type A or AB volunteers developed moderate to severe diarrhea compared to about half with blood types O or B.
The results could mean that a vaccine targeting the bacterial protein could be effective.

RUNDOWN SHOWS:
1. Blood type A person being infected by E. coli strain
2. E. coli strain attracted to A blood type, but not type B or O cells
3. Volunteer drinking water laced with E. coli
4. 81 percent of A or AB volunteers developed moderate to severe diarrhea after five days

VOICEOVER (in English):
"According to the study published in the Journal of Clinical Investigation,
a certain strain of E. coli is more likely to cause traveler's diarrhea in people with blood type A."

"Researchers from Washington University School of Medicine and Johns Hopkins University found that the diarrhea-causing strain of E. coli secretes a protein which attaches to sugar molecules on type A blood cells, but not type B or O cells. Scientists also found these sugar molecules present in the gut linings of people with blood type A."

"Scientists had 106 healthy volunteers drink water laced with a strain of E. coli extracted from a person in Bangladesh with severe diarrhea."

"After five days, 81 percent of the type A or AB volunteers developed moderate to severe diarrhea compared to about half with blood types O or B."
SOURCES: Science News
https://www.sciencenews.org/article/your-blood-type-might-make-you-more-likely-get-travelers-diarrhea