Word: safe
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Dates: during 1960-1969
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Richard T. "Tom" Seymour '64 indicated that the purpose of the request was to make sure that the dining halls maintained safe standards of health. Although these reports are considered "confidential," Seymour said that he expected no problems in obtaining them on a regular basis...
Sabin Type Declared Safe...
...December and Surgeon General Terry announced that "because potential risks of [oral] vaccination are believed by some to exist in adults, especially above the age of thirty, vaccination should be used for adults only with the full recognition of its very small risk." In effect this pronounced Type III safe...
...order to properly appraise the value of the two vaccines, one should examine their differences. Both are made from live polio viruses, cultured in test tubes on monkey kidney tissue. In the Salk process, the viruses are heated in formalin, killing them and making them safe for injection into the human blood stream. Fourteen days after the first shot, antibodies appear in the blood, giving a slight amount of protection against all three types of polio virus. Then a booster shot is administered and seven months later another booster, both raising the antibody level. A year later a fourth injection...
...possibility that the weakened virus might mutate back to its wild, virulent state, regaining its deadly ability to attack the human nervous system. It is this question that forced Sabin to prolong his field tests, but today it seems clear that his strains are genetically stable and therefore safe, as now proven in over 140 million vaccinated persons...