Progress toward global poliomyelitis eradication--1997-1998.

In 1988, the World Health Assembly resolved to eradicate poliomyelitis globally by 2000. Since then, substantial progress has been reported by all countries where polio is endemic in implementing the recommended polio eradication strategies (i.e., achieving and maintaining high routine coverage with oral poliovirus vaccine [OPV]; conducting National Immunization Days [NIDs] to rapidly decrease poliovirus circulation; establishing sensitive surveillance systems for polio cases and poliovirus; and carrying out mopping-up vaccination activities to eliminate the remaining reservoirs of poliovirus transmission). Although much progress has been made in many countries, substantial obstacles remain, particularly in 14 priority countries (i.e., global reservoir countries or countries with ongoing armed internal strife or civil war). This report updates progress during 1998 toward the global eradication target and describes accelerated activities to achieve the 2000 goal.