[转帖]关于窗口期的论述 论述, 转帖, 窗口

洋子

现在关于窗口期到底是几个月，是2到6周？是8周？是3个月？是6个月？还是一年？很多高危人群对此都充满疑问。下面是一封来自美国CDC的回信以及三个机构关于窗口期的论述，希望看了以后对大家有所帮助。

hello CDC, I wonder how accurate is the 6months'''' window period? I mean rencently I heard that some people were negative in 4months after high risky behaviour,but they are positive when it came 14 months. Do u think it is just rumor? *anxiously* lululu CDC你好。我想知道6个月窗口期的准确度？最近我听说有人在4个月的时候是阴，然后14个月又转阳的。你们觉得是会不会是传言呢？

CDC回复： The tests commonly used to detect HIV infection are actually looking for antibodies produced by an individual’s immune system when they are exposed to HIV. Most people will develop detectable antibodies within two to eight weeks (the average is 25 days). Ninety seven percent will develop antibodies in the first three months following the time of their infection. In very rare cases, it can take up to six months to develop antibodies to HIV. In these cases that you are talking about, a person would have had to have anot her risk for HIV after the test.

HIV检测通常都是寻找体免疫系统遇到HIV时产生的抗体。大部分人的抗体都是在8周以内（平均是25天）就能检测到。97%的人在感染后的头3个月都能检测到抗体。在非常罕见的例中，有的需要6个月才能产生抗体。因此，你说的那个人可能再检测后又去高危了。

美国三大机构关于窗口期的论述 美国红十字会 basic answer: before getting tested, it is useful for people to wait three months from the time they think they may have been infected with hiv (the virus that causes aids). this is enough time for most people to develop antibodies to hiv (the average time is 25 days.) otherwise, people may test negative even though they have hiv. this is called the "window period." 一般从高危三个月后进行测试是有效的.对于大多数人来说(平均25天)是可以产生足够的抗体.但也有可能是假阴,这就称为”空窗期” 网址: http://www.redcross.org/services/hss/tips/waittest.html

hiv insite for example, most antibodies show up within 4-6 weeks. and it goes on to say that if a person tests negative at 3 months then no further tests are needed. 大多数抗体产生不会超出4-6周,如果3个月后再复查,阴性的话,不须进行进一步的测试. 网址: http://www.hivinsite.ucsf.edu/insite.jsp?doc=2098.3ccb&page=pr-04-02

纽约护士协会: most people infected with hiv will develop enough antibodies to be detected by our current hiv antibody tests four weeks after the exposure. 用现行的抗体测试方法,大多数人在感染后4周就可产生足够的抗体了. 网址: http://www.nysna.org/programs/practice/alerts/alert3.html