Should I be on an empty stomach before playing hepatitis B vaccine?

You don't need an empty stomach. Matters needing attention in hepatitis B vaccination 1. Scope of use: Except those who have been infected with hepatitis B virus or HBSAg positive, hepatitis B vaccine can be used for injection immunization, especially for children under 3 years old in areas with high incidence of hepatitis B. The younger the age, the better the immune response (the immune response will be biased over 40 years old). In addition, infants born to HBSAg positive (especially HBSAg positive) pregnant women, hospital staff who are susceptible to infection, patients who transfuse blood and use blood products are also the targets of hepatitis B vaccination.

Precautions for hepatitis B vaccine II. Usage: Except for infants, before using hepatitis B vaccine, five items of hepatitis B should be tested by blood. If HBSAg, anti-HBS and anti-HBc are all negative, they can be used. When the baby is born (within 2 hours), 1 month and 6 months after birth, 30 micrograms should be injected into the deltoid muscle of the upper arm. Subcutaneous injection or hip inoculation can reduce the immune effect.

Precautions for hepatitis B vaccine 3. Contraindications: Hepatitis B vaccine should not be inoculated at the same time as measles vaccine (because it can interfere with and delay antibody formation). Hepatitis B vaccine is inactivated HBSAg protein and contains trace amounts of aluminum hydroxide, urea and formaldehyde. People with allergic history, fever or serious acute and chronic diseases are prohibited.

Precautions for hepatitis B vaccine 4. Check antibody after hepatitis B vaccination: After three doses of vaccine, the antibody status can be checked in four weeks.

Hepatitis B vaccine is only used to prevent the occurrence of hepatitis B, but it cannot eliminate the existing hepatitis B surface antigen in the body. Therefore, HBSAg positive people can't turn negative even after vaccination, and some people may have local pain, nausea, headache and short-term low fever.