Hello, the inactivated hepatitis A vaccine is non-toxic and can produce antigen stimulation.

Guiding opinions:

Generally, each person needs two shots in the whole process of immunization with hepatitis A vaccine. After one shot of basic immunization, it needs to be vaccinated again after 6 months to strengthen immunization. Therefore, it is suggested that you can do another intensive injection to produce complete resistance to hepatitis A virus.

Disease analysis:

Hello! Generally speaking, the effect of two inactivated vaccines is better than that of one attenuated live vaccine (only 1 inactivated vaccine basically does not produce antibodies). Since one shot of inactivated hepatitis A vaccine has been inoculated, it is better to inoculate the second shot of inactivated hepatitis A vaccine in terms of immune effect and safety.

Guiding opinions:

It is possible to produce antibodies, but the probability is very small. You can check whether antibodies are produced. If there are no antibodies, you'd better re-inoculate.