The World Health Organization urged countries today to resort to smaller doses to ward off outbreaks of polio as there is a global shortage of the vaccine.  The World Health Organization urged countries today to resort to smaller doses to ward off outbreaks of polio as there is a global shortage of the vaccine. “We do have a problem with the vaccine in the sense of not having enough of it,” Alejandro Cravioto, head of WHO’s Strategic Advisory Group of Experts (SAGE), told reporters in a telephone conference. “But the recent evidence that we reviewed shows that even if we give a smaller dose of vaccine under the skin instead of inside the muscle, we can have the same impact of protection as before,” he said.

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