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用间接血凝法测定２２０８名不同地区、年龄人群的白喉抗体水平．结果表明白喉抗体≥０．０１ＩＵ／ｍｌ的阳性率为６７．５％，抗体ＧＭＴ为０．０３９８ＩＵ／ｍｌ。各年龄组只有≥０．０１ＩＵ／ｍｌ白喉抗体保护率在５６．６％～８５．７％之间，ＧＭＴ为０．０２９９～０．０７０２ＩＵ／ｍｌ。白喉抗体水平以１～至１０～岁组较高，１５～至３０～岁组偏低，４０～至５０～岁组又有所回升。白喉抗体阳性率及ＧＭＴ农村低于城市、女性低于男性。需进一步加强农村的计划免疫和青少年、成人的强化免疫工作。
Indirect blood clotting method was used to measure the level of diphtheria in 2208 different age groups. The results showed that the positive rate of diphtheria antibody ≥ 0.01 IU / ml was 67.5% and the antibody GMT was 0.0398 IU / ml. The protective rates of diphtheria antibodies of ≥ 0.01 IU / ml in all age groups ranged from 56.6% to 85.7%, and the GMTs ranged from 0.0299 to 0.0702 IU / ml. Diphtheria antibody levels in 1 to 10 years old group is higher, 15 to 30 years old group is low, 40 ~ to 50 years old group has picked up. Diphtheria antibody positive rate and GMT rural areas below the city, women than men. It is necessary to further strengthen the planned immunization in rural areas and to strengthen the immunization of adolescents and adults.