The global campaign against poliomyelitis has relied on two main vaccine platforms: live-attenuated oral poliovirus vaccine (OPV) and inactivated poliovirus vaccine (IPV). OPV has been instrumental in ...

In its original form, the virus survives in just two countries. But a type linked to an oral vaccine used in other nations has already turned up in the West. By Apoorva Mandavilli Most American ...

In 1988, the World Health Organization (WHO) called for the global eradication of polio. Within a decade, one of the three poliovirus strains was already virtually eradicated — meaning a permanent ...

Although polio has been eliminated as an endemic disease in the United States, that isn’t true for other parts of the world. The US Centers for Disease Control and Prevention issued a Level 2 travel ...