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此项社会调查由比绍地方卫生机构负责、由外国卫生工作者在比绍的Bandim地区进行。1980年将3岁以下儿童,每季度称体重,把体重与接种情况记入存档卡片,登记与计算1979～1981年期间6～35月龄儿童接种麻疹疫苗后的死亡率。凡列为麻疹死亡者系指患麻疹1个月以内死亡。调查结果,
The social survey was conducted by the Bissau local health agency, with foreign health workers in the Bandim area of Bissau. In 1980, children under 3 years of age were weighed every quarter and their weight and inoculation were recorded on an archive card. The death rates of children aged 6 to 35 months after immunization with measles vaccine between 1979 and 1981 were recorded and calculated. Those who died of measles were those who died of measles within one month. Survey results