polio vaccine delivery

The polio vaccine is delivered through injections or oral drops, depending on the type. The injected vaccine, inactivated poliovirus vaccine (IPV), is given with a shot usually in the arm or leg, stimulating the immune system to recognize and fight the virus. The oral polio vaccine (OPV), given as drops in the mouth, contains weakened virus particles that train the immune system to respond without causing illness. Vaccination schedules typically include multiple doses to ensure strong protection. Through widespread vaccination, community immunity helps prevent the spread of polio, aiming for global eradication of the disease.