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1993年9月,在18个县随机抽取1755名0~3岁儿童,开展脊髓灰质炎免疫水平调查,以指导今后全省消灭脊髓灰质炎工作。结果:1、2、3型中和抗体的几何平均滴度(GMT)和阳性率分别为:524.80和96.98%,323.59和96.01%,436.50和96.18%。各县的抗体水平都比较高。各年龄组和不同性别的GMT和阳性率的差异不显著,服苗次数间差异十分显著。被查儿童平均服苗4次,在一定服苗次数范围内,服苗次数与CMT成正比。全程服苗的儿童阳性率达到95%以上。个别乡村存在免疫薄弱现象。结果说明全省农村地区儿童的脊髓灰质炎免疫水平较高。
In September 1993, 1755 children aged 0-3 years were randomly selected from 18 counties to conduct polio immunization surveys to guide future polio eradication efforts across the province. Results: The geometric mean titers (GMTs) and positive rates of type 1, 2 and 3 neutralizing antibodies were 524.80 and 96.98%, 323.59 and 96.01%, 436.50 and 96.18 respectively %. The antibody levels in all counties are relatively high. There was no significant difference in GMT and positive rate between different age groups and different genders. Children were investigated for the average service 4 times, within the scope of a certain number of clothes, the number of service is proportional to CMT. Full-service children’s positive rate of more than 95%. Individual villages have a weak immune system. The results show that polio immunity among children in rural areas in the province is high.