For many years, the “hepatitis b” hat has been crushing us. Fortunately, the situation has improved considerably in recent years. While this is inextricably linked to the ongoing progress in the treatment of hepatitis b and the widespread knowledge of hepatitis b control, the intensive vaccination of hepatitis b is undoubtedly all the more significant。
Take off the big hb hat and use the vaccine
A member of the hepatitis society of the chinese medical association and a medical doctor at the hepatitis centre of beijing ground hospital told journalists that vaccination against hepatitis b could be effective in preventing people not infected with hepatitis b, with hepatitis b and with hepatitis b。
In an interview with the newspaper life times, the deputy director of the society for infectious and phytopathological diseases of the chinese medical society, professor cheng jun jun, vice-president of beijing ground hospital, also stressed the importance of hepatitis b vaccine for the removal of the “hepatitis b” hat from china。
“researches at home and abroad have shown that hepatitis b vaccine plays a critical role in controlling the spread of hepatitis b virus. As a result, vaccinations against hepatitis b have been carried out in more than a decade in various health-care institutions, which has also reduced the prevalence of hepatitis b virus from 9. 75 per cent to 7. 18 per cent of the population. That is to say, this work has led to a reduction of twenty-three million people infected with the chronic hepatitis b virus in our country.”。
In large cities such as beijing and shanghai, the effectiveness of vaccinations is particularly evident, with the rate of positive children under the age of 15 approaching that of developed countries and almost zero for children under the age of 5. “this is a remarkable achievement worldwide.” professor jia jia jitdong, director of the hepatology branch of the chinese medical association, stressed that。
Vaccination follows the principle of "016"
With regard to how hepatitis b vaccine should be administered, he explained that newborns, especially children born to chronically infected mothers of hepatitis b virus, should be injected immediately upon birth, together with anti-hepatitis b immunoglobins. Standard injection protocols should follow the principle of “016”, i. E. The first dose of hepatitis b vaccine at birth, the second dose after one month and the third dose after six months. If no antibody is produced after injection, the dose can be increased or replaced by a subcutaneous injection, which can be 20-30 ug. If this opportunity is missed, the option is also available。
He was reminded that after the vaccinations were completed, it was necessary to check whether hepatitis b surface antibodies were produced to determine the effectiveness of the vaccinations. While it cannot be said that hepatitis b virus is certain to be infected without producing an antibody, it is clear that the insurance coefficient will be significantly lower than the antibody. People with surface antibodies, especially infants, should be examined once a year, and if antibody drops are insufficient, injections need to be strengthened. In addition, the army believes that, in general, the immune protection of newborns can last 16-18 years。
People at high risk deserve more attention
However, these may not be sufficient for populations at high risk of contracting hepatitis b. Among the family members are hb carriers, medical personnel, blood dialysis patients, oncologists, staff of blood products companies, homosexuals, drug addicts, etc., all at high risk of contracting hb virus。
Although most of our hb carriers are infected during the perinatal period (from 28 weeks of pregnancy to 7 days after delivery) and in early childhood, adults who are not immune to the hb virus may also become infected and suffer hepatitis, with 5 to 10 per cent of those infected becoming chronic carriers. “the adults who have not been vaccinated can also be re-inoculated. However, hepatitis b signs, including hbsag, anti-hbs, hbag, anti-hbe and anti-hbc (known as `two-and-a-half'), should be examined prior to vaccination. If hbsag is negative and hbs is anti-negative, hepatitis b can be administered”. The army indicated。
However, if hepatitis b virus has been confirmed, it is no longer required, as they do not have prevention problems and do not have prevention effects even if injected。
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