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口服脊髓灰质炎(脊灰)减毒活疫苗(Oral Poliomyelitis Attenuate Live Vaccine,OPV),在控制脊灰进程中发挥了重要作用。全球脊灰发病大幅度下降,目前只有少数几个国家还有脊灰野病毒循环。
Oral Poliomyelitis Attenuate Live Vaccine (OPV) plays an important role in the control of polio. Globally, the incidence of poliomyelitis has dropped drastically. Only a few countries still have circular poliovirus circulating.