At what age should the inactivated hepatitis A vaccine be administered?
Hepatitis A inactivated vaccine can generally be administered to children after they turn one year old, and adults can receive it at any time.
There are two types of hepatitis A vaccines: inactivated vaccines and attenuated live vaccines. Due to differences in preparation methods, the two types vary in both safety and stability. Compared with the live attenuated vaccine, the inactivated vaccine is more stable, induces a faster immune response, and provides stronger immunogenicity.
Therefore, infants, elderly individuals, those with weak constitutions, or people with compromised immune systems should receive the inactivated vaccine. Healthy adults may receive the attenuated live vaccine. Adults traveling to countries or regions with poor economic and sanitary conditions should consider vaccination. Children are typically vaccinated after reaching one year of age.
It is recommended that administration of the hepatitis A inactivated vaccine be done under medical guidance. If significant discomfort occurs, individuals should seek medical evaluation. Additionally, maintaining a healthy lifestyle is important—avoid staying up late, ensure adequate rest, and avoid spicy or irritating foods. Appropriate physical activity is encouraged to enhance immunity.