150 research primates got diarrhea, flooding lab with priceless vaccine data

Having more than 150 non-human primates at a research center fall ill with diarrhea in a stomach-churning outbreak that flowed for over two years doesn't sound much like good fortune. But for some scientists, it kind of was, providing a heaping pile of valuable data on how they might finally defeat a foul foe.

In a study published in the latest issue of Science Translational Medicine, scientist sifted through the dump of immunological data from the infections, logging new ways to train immune cells to defeat the bacteria behind the outbreak, a type of Shigella. Researchers were able to pluck out specific bits of the bacteria that the immune system could most effectively attack, linking specific target molecules to specific types of germ-busting immune responses. The researchers even precisely homed in on some of the tiny notches within those craggy target molecules where the most potent antibodies attached.

In all, the study "revealed unexpected features of the anti-Shigella antibody response in naturally infected [non-human primates] and represents a step toward the rational design of Shigella vaccine candidates," the authors write.

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