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脊髓灰质炎是由脊髓灰质炎病毒引起的一种急性肠道传染病。该病传播广泛,危害严重,遍及全球。自脊髓灰质炎疫苗(下称疫苗)问世以来,WHO 已将该病列为重点控制疾病之一。南阳市自1965年开始使用疫
Polio is an acute intestinal infection caused by poliovirus. The disease spread widely, endangering and spreading all over the world. Since the advent of the polio vaccine (hereinafter referred to as the vaccine), WHO has listed the disease as one of the key controlled diseases. Nanyang City since 1965 began to use the epidemic