Contraindications of OPV and adverse events
OPV is a very safe vaccine and there is no contraindication to prevent giving it. Serious adverse reactions to OPV are very rare: acute flaccid paralysis has been reported in approximately one child in every 1–10 million children who have been vaccinated with OPV.
Summary of oral polio vaccine (OPV) immunization characteristics.
|Type of vaccine||Live-attenuated antiviral vaccine|
|Number of doses||Four (referred to as OPV0, OPV1, OPV2 and OPV3), plus campaign doses|
|Schedule||At birth, 6, 10 and 14 weeks|
|Additional dose||If the child spits or vomits after OPV, repeat the dose immediately; if the child has diarrhoea, give a fifth dose at least 4 weeks after the scheduled fourth dose|
|Adverse events||Very rarely AFP; refer immediately to a higher health facility|
|Administration route||Into the mouth (oral)|
|Storage||Store between +2°C and +8°C (may be frozen for long-term storage)|
What should you do if a baby vomits immediately after being given the oral polio vaccine?
You should repeat the dose immediately; it is quite safe to give the baby an extra dose of OPV.