1·This new phase was announced alongside the confirmation that indigenous poliovirus has not circulated in Egypt and Niger for over 12 months.
这一新阶段是与确认超过12个月本土脊髓灰质炎病毒未在埃及和尼日尔传播一起宣布的。
2·In very rare instances, the virus in the vaccine can mutate into a form that can paralyse - this is what is known as a vaccine-derived poliovirus or VDPV.
在极少情况下，疫苗中的病毒可能变异成一种可导致瘫痪的类型，这就是人们所称的疫苗衍生脊髓灰质炎病毒(VDPV)。
3·The world embarked that year on a programme to eradicate the poliovirus, which cripples permanently.
这一年，全世界开始实施造成终身残废的脊髓灰质炎病毒根除规划。
4·WHO is working with the Ministry of Health in Yemen to ensure that AFP surveillance throughout the country is sensitized so that no transmission of wild poliovirus is missed.
世卫组织正在与也门卫生部一起努力确保在整个国家宣传急性弛缓性麻痹监测，以便不使野生脊髓灰质炎病毒的传播遗漏。
5·The findings of the investigation suggest a recent introduction of wild poliovirus.
调查结果表明野生脊髓灰质炎病毒的最近传入。