The effectiveness of the different vaccines is differing based on the types of vaccines. Some vaccines are effective till lifetime while some vaccine needs in booster dose. If you give hepatitis vaccine than it will last long till life while some other types of vaccines needs booster dose like tetanus and flu vaccine needs booster dose. Same way diphtheria vaccine needs booster dose too.
It is essential to take the vaccine in regular time to avoid infections. It is essential to take the booster dose on time to avoid such diseases. Vaccination can reduce the chances of diseases.
The vaccination can save child from the chronic diseases like flue and various other types of diseases. It is important to vaccinate the child as per schedule.