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

A study published in the Journal of Clinical Investigation reveals that a specific strain of E. coli is more likely to cause diarrhea in individuals with blood type A. Researchers from Washington University and Johns Hopkins University discovered that this strain secretes a protein that binds to sugar molecules on type A blood cells, which are also found in the gut linings of these individuals. In an experiment involving 106 healthy volunteers, those with blood type A or AB were more likely to develop moderate to severe diarrhea compared to those with blood types O or B.

Which journal published the study on the E. coli strain affecting blood type A?

• Journal of Health Sciences

• Journal of Biological Studies

• Journal of Medical Research

• Journal of Clinical Investigation

What did researchers find about the protein secreted by the E. coli strain?

• It binds to sugar molecules on all blood cells.

• It binds to sugar molecules on type O blood cells.

• It binds to sugar molecules on type A blood cells.

• It binds to sugar molecules on type B blood cells.

Where else are the sugar molecules, that the E. coli protein attaches to, found?

• In the skin cells of people with blood type A

• In the gut linings of people with blood type A

• In the muscle cells of people with blood type A

• In the liver cells of people with blood type A

How many volunteers participated in the study involving E. coli?

• 50

• 75

• 106

• 150

What percentage of type A or AB volunteers developed moderate to severe diarrhea?

• 81%

• 50%

• 70%

• 60%