Hi,
Welcome to Health Care Magic, thanks for posting your query with us.
I understand your concern.
Pulse
polio drops is generally a part of the
vaccination schedule, Please make sure if your doctor has already administered it in the vaccination cycles which child recieved. If not there might be a slight risk depending on the country you live in and the exposure to polio cases and virus.
even now your 7 year old can recieve polio vaccination, a total of 3 shots are given and a booster dose is given after 1 and a half month after 1st shot. meet your pediatrician who will assist you with this.
You say that your 5 month old baby has missed taking it in january, no need to be worried because you can always get the next scheduled dose or you could
consult a pediatrician and ask him to administer the dose.
The polio drops taken on scheduled doses till age 5 can prevent and totally eliminate the risk of developing polio in the future. So its better if you follow this for your 5 month old baby.
Hope this helps and answers your query satisfactorily, Do write back to us if you need further assistance.
Wishing them both good health,
Take care .
Regards.