511例鼻咽癌高危人群监测7年中IgA／VCA滴度的变化

Seven Years Follow-up for EBV-IgA/VcA in 511 PeoPle in high risk NPC Area

本文对四会县５１１例高危人群在７年中ＩｇＡ／ＶＣＡ滴度变化进行监测。阳性者在监测的头２年中出现过阴性的人数占７７．９４％。阳性者在后３—４年中有５５％出现过阳性。至监测结尾时阴转率为３８．４８％。四会县是世界鼻咽癌的最高发县，ＶＣＡ的阴转率也高，两者之间有何联系，值得进一步探讨。

In the seven years of following 511 casese screened for EBV-IgA/VcA in Sihui Country. Only10% of them were keeping at the original level, 51. 5% of them had changed from positive to ngeative then to positive again, or from negative to positive then to negative. Positives in first two years changing to negative ones composed 77. 94%. 55% negaitives had changed to positives response were seen in 3-4years. In our study about 38.46% of positive response changed to negative. Any association is there betwed both highest risk area of NPC, in the world highert rate of changing to negatire in Sihui needs to be studied in fature.