How long is the window of AIDS?

The AIDS window period is from being infected by HIV to the production of HIV antibodies in the body, which is called the window period. How long is the AIDS window? After all, how long does it take to test negative for HIV antibodies that is really uninfected?

What is the window period of AIDS?

First of all, we have to explain a concept, that is, we do a blood test, which is a blood test, which tests the antibodies against HIV in the blood. if you find out that there are antibodies to HIV in the blood, it means that you are infected with HIV. You have HIV in your body.

But it takes time from the entry of HIV into the body to the production of antibodies, which is usually three weeks to two months, and we can't find out before we produce antibodies. It is possible to test, there is no HIV antibody, but there is already a virus in the body, during this period of time there is a virus in the body but the antibody can not be detected is the window period.

To put it simply, the AIDS window period is from being infected by HIV to the production of HIV antibodies in the body, which is called the window period. After the human body is infected with HIV, it usually takes 2-12 weeks, with an average of about 42 days before the HIV antibody can be detected in the blood. Because the period from the infection of HIV to the production of antibodies in the body can not detect HIV antibodies, it is called window period. Although there is no HIV antibody in the window period, there is already HIV in the body, so the window period is also contagious.

Why did you bring up the window? Because in the window period, people infected with HIV can transmit the virus to other people. If the first test is negative, the doctor usually advises you to check again two or three months later to make sure it is negative. If it turns out to be negative after three months, you can basically rest assured. Because very few people have a window period of more than 3 months.

How can the AIDS test paper be accurate?

The accuracy of the AIDS test strip is reliable, the accuracy of the saliva AIDS test strip is 99.85%, and the accuracy of the blood AIDS test strip is 99.7% vacuum pumps , all using the same reagents as hospitals, centers for disease control, blood stations and other medical institutions.

We can understand the detection principle of the AIDS test strip: the AIDS test strip is a new generation of testing reagent developed by colloidal gold immunochromatography technology, which can detect HIV-1/2 specific antibodies in serum or plasma samples. It has been jointly examined by the China Institute for the Control of Pharmaceutical and Biological products, six authoritative AIDS monitoring centers and confirmation laboratories, blood centers and hospitals in China. The results show that the sensitivity of the test strip is 99.40%, the specificity is 100%, and the total coincidence rate is 99.7%. The quality of the AIDS test strip is at the same level as the current international mainstream reagents.

In theory, the accuracy of AIDS test paper testing, as many doctors said, is as high as 99.7%. So why not be 100% accurate? This may be caused by many reasons. If the use of the test paper is not appropriate, the use of time is not accurate, there is another point is that the quality of the test paper does not pass. Therefore, the detection accuracy of the test strip is not 100%, which is based on a certain basis.

What are the initial symptoms of AIDS?

There are four stages of AIDS: acute infection, incubation vibrators for women , pre-AIDS and typical AIDS. And AIDS symptoms are different in each period, and not all patients infected with AIDS will go through these four stages.

1. Acute infection period of AIDS

The acute infection period is the window stage. The main symptoms of this period are: fever, rash, enlarged lymph nodes, muscle soreness lockthecock , fatigue, night sweats, pharyngitis and so on.

Due to the acute infection of AIDS, the symptoms are relatively mild. 2-6 weeks after being infected with HIV, blood tests can be conducted to determine whether the HIV antibody is positive or not, which is the criterion for judging whether or not to be infected with AIDS.

2. Incubation period of AIDS

HIV infection begins to enter the incubation period, and will go through 2-10 years, AIDS incubation symptoms are not obvious rabbit vibrator , so the incubation period is not easy for people to detect and prevent AIDS. But the incubation period is not a static period, let alone a safe period, the virus continues to reproduce and has a strong destructive effect.

Therefore, people with high incidence of AIDS should pay attention to HIV testing to avoid its impact on health.

3. Pre-AIDS

Pre-AIDS refers to the period of time when AIDS-related symptoms and signs begin to appear after the incubation period until they develop into a typical AIDS. At this time, AIDS will appear continuous lymph node enlargement, the location of which is more common in the head and neck, armpit, groin, neck, pre-ear, post-ear, femoral lymph nodes, submandibular lymph nodes and other symptoms.

Lymph node enlargement in pre-AIDS generally lasts for more than half a year; weight loss is more than 10%; periodic low fever that lasts for several months; night sweats; hairy leukoplakia in the mouth is an important clue for early diagnosis of AIDS.

4. Typical AIDS period

Typical AIDS period due to serious damage to the immune system, prone to a variety of fatal opportunistic infections and malignant tumors. Pathological changes can be manifested in various organs of the human body, such as lung, oral cavity, digestive system, nervous system, endocrine system, heart, kidney, eye, joint, skin and so on. Opportunistic infection has occurred and the average survival time is 9 months.
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