The polio vaccine protects against poliomyelitis (polio). All the four doses of the inactivated polio vaccine (IPV) are given by injection. Before 2000, the US government recommended that the third
The polio vaccine protects against poliomyelitis (polio). All the four doses of the inactivated polio vaccine (IPV) are given by injection. Before 2000, the US government recommended that the third