vaccinations against poliomyelitis. world polio day. inactivated poliomyelitis vaccine.

against antibodies attenuated comprising containing cure day disease dose drops drug equipment flu health healthcare hospital illness illustration immunization inactivated infection infographics injection inoculation ipv isolated killed live medical medicine opv oral patient pediatrician people polio poliomyelitis poliovirus professional protective science sick syringe therapy vaccination vaccinations vaccine vector virus world