Why do volunteers continue to give children Polio drops, even though they have had the required three doses?
Every child during the first year of life should receive at least three routine doses of Oral Polio Vaccine (OVP). However, OPV is not 100 per cent effective. Even children who have received all routine doses and pulse polio doses can get the disease. The only way to completely eliminate the risk of getting children paralysed by polio is to completely interrupt the circulation of wild poliovirus by administration of OPV to all under-five children over a few days and repeat it a few times each year.
