摘要: SMALLPOX VACCINESA new study has found that the 15.4 million doses of aging smallpox vaccine currently in U.S. stockpile--an amount considered woefully inadequate--can be safely diluted by a factor 5 or 10 without losing their potency. And, another unexpected windfall, Aventis Pasteur just announced it plans to donate government about 85 additional similar have been stored its freezers for 40 years.
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