Can different strains of the same bacterial species elicit varying immune responses?

Scientists from The Rockefeller University (NY, USA) studied different strains of two major human bacterial species and discovered that each strain elicited a greatly varied acute adaptive immune response.

The study builds on previous evidence that individuals vary in their susceptibility to infection with the same species of pathogenic bacteria. It has been thought that differences in the immune system of infected patients could explain this variability; however, distinct genes between strains may also play a role.

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