Giving children under 5 years old an extra dose of inactivated polio vaccine (IPV) helps to boost their immunity to the poliovirus and should be added to vaccination programmes in polio-ende... Read more
Giving children under 5 years old an extra dose of inactivated polio vaccine (IPV) helps to boost their immunity to the poliovirus and should be added to vaccination programmes in polio-ende... Read more
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