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Medical Term:

plague vaccine


Definition: vaccine as licensed for use in the U.S. prepared from cultures of Yersinia pestis, inactivated with formaldehyde, and preserved with 0.5% phenol; injections are made intramuscularly, and booster inoculations are recommended every 6–12 months while people remain in an area of risk; live, attenuated bacterial and chemical fraction vaccines are also available.