Questions
The baby is five months old and has already received two doses of the polio vaccine. However, during the fourth month, some of the vaccine may have leaked out when the oral drops were administered. Concerned about insufficient antibodies, the parents are asking for remedial measures.
Answers
According to the description, if the baby vomits the polio vaccine drops, they can be directly topped up. The polio vaccine should be administered two drops according to the schedule of February, March, and June. The pentavalent vaccine includes Hib, DTP, and polio vaccines, with the fifth dose to be administered at four years old and not to be administered prematurely. It is not scientifically advisable to administer the pentavalent vaccine 37 days after the initial dose. The immunization schedule should be strictly followed without arbitrarily increasing the number of doses.