Seatisties d aea show l model(all HB serum marker are nomal),3 model(HBsAg,HBeAg,HBeAb)ra te w ere strongly decreased from 50.6%,2.7% in 1999 to 42.0%,1.0% in 2003. And 2 model(anti-HBs)was increased form 26.3%(1999)to 40.0%(2003).

• 模式1；3呈明显下降的趋势；分别由1999年的5 0 .；6%25；2