$BOCBjDs6!(B

$B%j%"%k%?%$%`(BPCR$B$rMQ$$$?(BNV$B8!=PK!$NI>2A(B


$B@*8M>M2p!"F~C+E890!!!JBg:e;TN)4D6-2J3X8&5f=j!K(B


$B!!(BNorwalk viruses(NVs)$B$N8!::K!$O!"(BReverse transcription-PCR(RT-PCR)$BK!$K$h$k(BNV$B0dEA;R$N8!=P$,o$N(BPCR$BK!$KHf$Y9b46EY$GFC0[@-$,9b$/!"DjNL@-$,$"$j!"(BPCR$BH?1~8e$NEE5$1KF0$d%O%$%V%j%@%$%/$J$$!#:#2s!"1F;3$i$,Js9p$7$?%j%"%k%?%$%`(BPCR$BK!$*$h$S(BAndo$B$i$N(BG1$B!&(BG2$B%W%i%$%^!<%;%C%H$rMQ$$$?(BRT-PCR$BK!$K$h$j!"45

$B!!2a5n$KBg:e;TFb$G8!=P$7$?(B6$B $B!!%Z%"!<7l@6$O9qN)46@w>I8&5f=j$G(BNLVs$B$N(BG(genotype)$B-57?(B4$B

$B!!$^$?!"%j%"%k%?%$%`(BPCR$B$H(BRT-PCR$B$N(BNV$B8!=P46EY$rHf3S$9$k$H!"%j%"%k%?%$%`(BPCR$BK!$O#1H?1~(Btube$B$K$D$-(BNV$B0dEA;R$,?t%3%T!<$+$i8!=P2DG=$G$"$C$?!#(BRT-PCR$BK!$G$O#1H?1~(Btube$B$K$D$-(BNV$B0dEA;R$,?tI4%3%T!<$+$i8!=P2DG=$G$"$C$?!#$7$+$7!"(BRT-PCR$BK!$G$O#1H?1~(Btube$B$KB8:_$9$k(BNV$B0dEA;R$,(B104$B%3%T!<$G$OLs(B50$B!s$,1"@-$H$J$j!"(B102$B!A(B105$B%3%T!<$NHO0O$G$O(BNV$B8!=P7k2L$N?.Mj@-$,Dc$$7k2L$H$J$C$?!#(B

$B!!%j%"%k%?%$%`(BPCR$B$rMQ$$$?(BNV$B8!=PK!$O(BRT-PCR$BK!$KHf$Y$F8!=P46EY!"FC0[@-!"?WB.@-$NE@$GM%$l$F$*$j!"(BNV$B8!::K!$H$7$FM-MQ$G$"$k$H9M$($i$l$?!#(B



$B!!K\8&5f$OJ?@.(B13$BG/EY8|@82J3X8&5f!J@83h0BA4Am9g;v6H!K!V?)IJ$NHy@8J*1x@w>u67$NGD0.$H0BA4@-$NI>2A$K4X$9$k8&5f!W$N0lIt$H$7$F


$B"+(BBack$B!!!!!!(B$B>6O?L\$B!!!!!!(BNext$B"*(B
$B%H%C%W%Z!<%8$X$b$I$k(B