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本文报道了新加坡在大规模进行脊髓灰质炎病毒疫苗免疫20年后的血清流行病学调查情况。作者的调查对象为6个月～40岁以上各个年龄组健康儿童和成年人,其中包括献血员、军人、学生和住院外科手术的少儿,各年龄组标本的多少均
This article reports on the serological epidemiology of Singapore 20 years after large-scale immunization with poliovirus vaccine. The authors surveyed healthy children and adults of all ages from 6 months to 40 years of age, including blood donors, soldiers, students and children undergoing inpatient surgeries, and how many of each age group