甘肃省1995年急性弛缓性麻痹病例病毒学监测

VIROLOGICAL ANALYSIS OF AFP CASES IN GANSU PROVINCE IN 1995

甘肃省１９９５年共报告１５岁以下儿童急性弛缓性麻痹（ＡＦＰ）病例９０例，发病率为１．３２／１０万。省脊髓灰质炎（脊灰）实验室收到ＡＦＰ病例的粪便标本共７９例，占８８％；双份合格粪便标本采集率为６８％（６１／９０）；粪便标本７天内送省脊灰实验室的占６５％（５２／７９）收到粪便标本后７天内分离培养的占８９％（７０／７９）；分离培养结果及时报告率为８７％（６９／７９）。病毒分离阳性率１３．９２％（１１／７９），其中脊灰病毒（ＰＶ）Ⅱ型５株，Ⅲ型１株，非脊灰肠道病毒（ＮＰＥＶ）５株。收到ＡＦＰ病例密切接触者粪便标本３ｌ８份，病毒分离阳性率５．６６％（１８／３１８），其中ＰＶⅡ型８株，ＮＰＥＶ１０株。全部送检粪便标本ＮＰＥＶ分离率３．７８％（１５／３９７）。所分离的ＰＶ均为疫苗株，且Ⅱ型居多。

0 AFP cases of children under 15 years old were reported in 1995 in Gansu Province,the dis-ease incidenee was l.32/l00,000.79 fecal specimens that accounted for 88% of the AFP caseswere sent to Provincial Polio Laboratory.The adequate two stool s pecimen collecting ratewas 68%(61/90),the specimens were sent to the Provincial Polio Laboratorv within 7 davs af-ter collecting and its deli very rate was 65%(52/79)The virus isolation rate proceeded in Provin-cial Polio Lab.within 7 days after receiving stool specimens was 89%(70/79)and the timelyreporting rate of virus isolation was 87%(69/79)The viruS isolation rate was l3.92%(11/79)that included 5 polio Ⅱ strains,l polio Ⅲ strain and 5 non-polio enteroviruses(NPEV)Fromclose contacts of AFP cases,318 stool specimens were collected,the virus isolation rate was5.66%(18/318)including 8 polio Ⅱstrains and l0 NPEV strains.The NPEV isolation rate oftotal stool specimens collected was 3.78%(15/397)the pol io viruses isolated were all the poliovaccine strains and most of them belonged to polio type Ⅱ.