You should have had 3 primary doses; 2 aren't enough. You will need to start over and get 3 shots per the vaccination schedule and then if you want to be tested for the antibody and determine if the 4th shot is needed, at that time you can do so.
The Hepatitis A vaccine is typically given in two doses, with the second dose administered 6-18 months after the first dose. It provides long-lasting protection, and a booster dose is generally not needed for most healthy individuals.
Three
It is unlikely. Hepatitis A vaccine is a two-dose series.
To maintain immunity against Hepatitis B, it is recommended to get a series of three doses of the vaccine.
The hepatitis A vaccine is typically given in two doses, with the second dose administered 6 to 12 months after the first dose. This provides long-lasting protection against the virus.
The Twinrix vaccine is typically given in 3 doses. This is normal.
The series should not be restarted; resume the series where it was interrupted.
A level of 10.0 mIU/mL or greater after three doses of the Hep B vaccine demonstrates immunity.
at birth,then after 6 weeks,then in the 10th week,and 14th week.after that booster doses is given in 5 years
The standard course of immunization for healthy children is three doses of DPT (diphtheria-tetanus-pertussis) preparation given between two months and six months of age, with booster doses given at 18 months and at entry into school.
the first one lasts for 4 months than the second is 8 months than the third one lasts for the rest of your life
The DTP vaccine, which protects against diphtheria, tetanus, and pertussis, typically provides long-lasting immunity, though the duration can vary. Primary vaccination is usually given in childhood, followed by booster doses. Immunity to diphtheria and tetanus can last for about 10 years, while protection against pertussis may diminish more quickly. Therefore, it's recommended to receive a Tdap booster every 10 years for continued protection.