Public health advocates have long set their sights on wiping out polio worldwide, but recent resurgences of the pernicious disease raise questions about its future eradication.
Several months ago a wild strain of the virus surfaced in a sewer system in Rahat in southern Israel, and now it has reportedly been detected throughout the country. Israel’s government this week launched a nationwide vaccination campaign, attempting to inoculate all children under nine years of age with oral polio vaccine (OPV), a form of the vaccine containing a live, weakened form of the virus. Most of these children were already vaccinated as babies with inactivated polio vaccine (IPV), otherwise known as the dead-virus vaccine. But people who were injected with IPV can still be healthy carriers of the disease and shed the virus in feces.