| 李景华.麻疹显性感染的血凝抑制抗体临界滴度的观察[J].Chinese journal of Epidemiology,1985,6(1):7-8 |
| 麻疹显性感染的血凝抑制抗体临界滴度的观察 |
| Observations on The Critical Titre of HA Inhibition Antibodies in Apparent Measles Infection |
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| Abstract: |
| 本文报道浙江省临安县青云中学在麻疹显性感染时的HAI抗体临界水平及显性感染后的HAI抗体滴度。初三(1)班27名学生HAI抗体都在1:4以上,GMT=1:28.12,采血后无麻疹病人发生。而初一(2)班42名学生的GMT=1:4.56,群体免疫水平很低,采血后发病的12例麻疹病人中,HAI抗体滴度<1:2的显性感染率为80%;1:2的为43%;1:4的为17%;1:8以上未见显性感染病人。结果表明,有低的HAI抗体者接触麻疹后是可以发生显性感染的。 |
| English Abstract: |
| The critical titre of HAI antibody in measles infection was investigated in a middle school of the Qingyun People's Commune, Linan county,Zhejiang Plrovince. The lowest HAI antibody titer of the 27 students in Class One, Grade Three, was over 1:4, and GMT=1:28.12.No measles case was found after collecting blood samples in that class.The GMT of HAI antibody titer of 42 students in Class Two, Grade One, was 1:4.56. The community immunity level was quite low.Twelve measles cases occurred in the class after collecting bood samples.Among them, the apparent infection rate was 80% in those whose HAI was <1:2;43% in persons with titre 1:2;17% in those with titre 1:4.In apparent infection case was found in those whose HAI was over 1:8. It has proved that the apparent infection may occur to those with low HAI when they contact the measles cases. |
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