Hi doctor, My son is 20 months old. In polio campaign he was given 3 drops of OPV instead of 2 drops. I am worried about the extra drop given. I could not find any recommendation of WHO or UNICEF for minimum and maximum dose of OPV drop in the internet. Please help me in this matter. Thank you.
Hi. An extra drop of OPV (oral polio vaccine) should not cause him any problem. These are live attenuated vaccine and thus virus does not cause any illness. Case report of them are very rare and usually with faulty vaccine preparation. Also, this was his booster dose. It would only help in giving immunity to polio.