Hepatitis B is a chronic inflammatory disease of the liver caused by persistent infection with the hepatitis B virus, and compared with other viral hepatitis, hepatitis B has a long incubation period, is highly harmful, and is difficult to completely cure. Hepatitis B and C are mainly transmitted by blood, mother and child, and sexually, which can lead to cirrhosis and liver cancer. Surveys show that 50% of adults in China are at potential risk of contracting hepatitis B virus.
China is a big country with hepatitis, with about 70 million people infected with chronic hepatitis B virus, and nearly 300,000 people die of hepatitis B-related cirrhosis, liver cancer and other diseases every year. About 90% and 25%-30% of hepatitis B virus infections in the perinatal and infantic stages develop chronic hepatitis B, and only 5% to 10% develop chronic hepatitis B after the age of 5 years. Among patients with cirrhosis and liver cancer in China, the proportion caused by hepatitis B virus infection is 77% and 84%, respectively.
In order to build a population-wide immunity barrier, Tianjin has implemented a free vaccination program for high-risk groups such as close contacts of hepatitis B.
Who can get vaccinated for free?
People aged 16 years and above with high risk of infection, mainly including hepatitis B cases in tianjin's permanent population reported by the "Infectious Disease Surveillance System" (or permanent residents who can provide hepatitis B case diagnosis, HBsAg test positive, HBVDNA test positive certificate) close contacts aged 16 years or older, "Infectious Disease Surveillance System" reported tianjin resident population hepatitis C cases (or permanent residents who can provide hepatitis C case diagnosis, anti-HCV test positive, HCV RNA test positive certificate) have not been explicitly vaccinated against hepatitis B, At the same time, the diagnosis of hepatitis B or people living with the virus has not been definitive.
How to vaccinate for free
On the basis of "informed consent", the primary medical and health institutions will register and collect blood free of charge to screen for hepatitis B virus infection signs, and those whose test results meet the vaccination conditions and have no vaccination contraindications can receive hepatitis B vaccine free of charge.
How many injections?
A total of 3 doses are required, following the standard vaccination procedure of 0-1-6 months, that is, the second and third doses of hepatitis B vaccine are given in the first month after vaccination and after the sixth month.
Who is not eligible for the hepatitis B vaccine
Vaccination is contraindicated for people who are known to be allergic to any of the ingredients contained in the hepatitis B vaccine or who have had allergies after receiving the hepatitis B vaccine;
Pregnant women;
People with allergies or those with a history of allergic diseases should be vaccinated with caution;
People with acute illness, severe chronic disease (eg hyperthyroidism, hypertension, cirrhosis, chronic dialysis), acute onset of chronic disease and fever.
A positive or quantitative test for HBsAg > 0.05 IU/mL, which is consistent with one of the above conditions, indicating that it has been infected with hepatitis B virus and that hepatitis B vaccination has been ineffective.
HBsAb is qualitatively positive, HBsAb quantitative > 30 IU/mL, then hepatitis B vaccine is generally no longer recommended (it is generally believed that HBsAb > 30 IU/mL to have a protective effect, preferably more than 100 IU/mL).
Sources
Tianjin Municipal Center for Disease Control and Prevention | "Tianjin Hepatitis B Case Family Close Contacts Can Get Free Hepatitis B Vaccine"
Healthy Tianjin | 【Concern】Let's take a look at the basic public health service project - free hepatitis B vaccination program for high-risk groups such as close contacts of hepatitis B cases
The Digestive Liver Disease Channel of the Medical Community | Does getting the hepatitis B vaccine mean you won't get hepatitis B? Please put away this vaccination guide!
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