Novel 3-in-1 Vaccine Can Fight Against Traveler's Diarrhea

by Iswarya on  October 11, 2018 at 10:50 AM Drug News
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New three in one vaccine is designed to fight against the main causes of traveler's diarrhea worldwide, reports a new study. The findings of the study are published in the journal Vaccine.
Novel 3-in-1 Vaccine Can Fight Against Traveler's Diarrhea
Novel 3-in-1 Vaccine Can Fight Against Traveler's Diarrhea

Prof. Mario Monteiro says his novel three-in-one approach to developing a new vaccine could also save lives in developing countries, where it's estimated that these three common pathogens kill more than 100,000 children under age five each year.

The paper discusses Monteiro's so-called conjugate vaccine that yokes together proteins from pathogenic E. coli with sugars from Shigella and Campylobacter jejuni. All three bugs are major causes of bacterial diarrhea globally.

In tests with mice, the vaccine provided immunity against all three pathogens.

No licensed vaccines exist against any of these pathogens. A sugar-based vaccine developed by Monteiro in 2009 against campylobacter alone is currently undergoing human trials but is still an estimated decade away from potential release.

He said this new three-in-one approach might ultimately overtake that earlier single-target vaccine, although any new vaccine may take decades to test and release. "We're targeting three pathogens at the same time," he said. "Instead of three shots, maybe you only need one."

As with the earlier campylobacter vaccine, this new method has been patented by U of G and the United States Naval Medical Research Center, which funded the research.

Monteiro said further research is needed to determine the optimum amounts of protein and sugars in the vaccine and to make the vaccine more efficient.

He worked on the project with former post-doc Zuchao Ma and former graduate students Brittany Pequegnat and Eman Omari, along with U.S. Navy researchers.

Source: Eurekalert

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