A lot of people finishHepatitis b vaccineThink once and for all, the antibody level will decline over time. How much longer do we have to play again。
Hepatitis b vaccine changed 30 years in china
Hepatitis b vaccine was produced for the first time in 1980 in china, when it was targeted only at high-risk groups, primarily at austro-positive and dna-positive mothers, with the central aim of halting mother-to-child transmission. During that period, vaccine production capacity was limited, prices were high, ordinary households were unable to reach them at all, and there were few people in the country who could actually be vaccinated, with very narrow coverage。
In 1994, the policy was adjusted so that all newly born children could be vaccinated against hepatitis b. By 2004, the state had officially included hepatitis b vaccine in its immunization programme, with universal free coverage. As a result of these three steps, the surface antigen delivery rate for hepatitis b in china has continued to decline significantly from the higher levels in the past, with significant public health gains。
Infant and young child 106 vaccination programme
The national programme of standards for infants and young children is currently a single injection in the ages of 0, 1 and 6 months, with the first shot at birth, the second shot at full moon and the third in six months. Three shots complete the basic immunisation response and normally no additional fourth dose is required, and the parents complete it according to schedule。
However, after three shots, the child must be taken to check for antibodies. If the antibody is not produced by the time of the child's seventh month, it can be filled again. In particular, young children with one parent with hepatitis b are a high-risk group, and it is important to pay close attention to whether the antibody is actually in place and not to feel that it is over。
The antibody drop is a passing line
Hepatitis b surface antibody values above 100 miu/ml are considered to be physically protective. Below this threshold, it is clear that the immune response is inadequate, that the body's defence of the hepatitis b virus remains weak, and that there is still a risk of infection in daily contact and that it cannot be taken lightly。
So let's not just stare at the no-no-no, really focus on antibodies. The injections would not be safe, and it would be necessary to go to the hospital and make sure that the antibodies are actually in place before the prevention of hepatitis b is actually achieved, otherwise the needles in the front would be a white beating and time wasted。
Adult vaccines have memory advantages
When adults are vaccinated against hepatitis b, the immune system forms memory cells and remains in the body for long periods. Even if the surface antibody drops slowly over time, once re-exposed to the hepatitis b virus, memory cells can rapidly initiate a second response, generating a large number of antibodies to suppress the virus in a short period of time。
This is also the underlying reason why adults do not have to be as frequent as infants and young children. As long as the initial three-shot response is good, the follow-up protection period is long and does not need to be checked once a year, and there is no need to make this a source of constant anxiety, and it is time to get busy。
A drop of over 1,000 can be measured in five years
It is recommended that antibody levels be reviewed every five years if the antibody drops after complete vaccination are stable above 1,000 meu/ml. As long as the value remains at more than 1,000, there is little need for any additional boosters, and the body is in a state of continuous protection, so that it can live comfortably。
Such high drops mean that the immune memory is very strong, amounting to a large stock of antibodies in the body. The five-year test is merely a monitoring tool, not a need for injections, so that periodic reviews do not become a psychological burden, and it takes time to check and see that the numbers are sufficient。
One hundred drops down, one hundred kicks
If antibody drops and breaks the threshold of 100 per year, a booster injection is required. After a month of review, if the drop can return to more than 1,000, it will be sufficient to continue at the pace measured in five years, without undue tension, and to indicate that the immune memory is still alive。
However, the low response and reduced protection of this immunization response is illustrated by the fact that only a hundred drops have been added. One or two or even two or three years later, the decision is based on the actual antibodies of the time to stop fighting, not to strengthen it once and for all。
Did you or your family take a blood sample of the antibody after the hepatitis b vaccine? You are welcome to talk about your situation in the comment area and to send it, if you find it useful, to friends around you who are still struggling。
