Canadian researchers are working to develop a more effective vaccine for Rhodococcus equi that they hope will protect foals as young as three weeks of age from the harmful bacterium.

Rhodococcus equi lives in the soil and it can travel to, and multiply within, the foal’s lungs, causing a deadly pneumonia if it is not caught and treated early. The mortality rate of foals with R. equi is 28%, and the bacterium is the leading cause of disease in foals between one and six months of age

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