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Prevention and control of perinatal hepatitis B virus transmission in ...

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Prevention and control of perinatal hepatitis B virus transmission in ...

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liver enzyme abnormalities than were the HCV-negative patients (56.5 +/- 2.3 versus 47.6 +/- 1.8,p = 0.003; <strong>and</strong> 14 <strong>of</strong> 27 versus 7 <strong>of</strong> 75, p < 0.01, respectively). HCV-positive patients with liverenzyme abnormalities were younger than HCV-positive patients without liver enzymeabnormalities (52.5 +/- 3.0 versus 62.8 +/- 2.8, p = 0.02). Sixteen patients (15.7%) were <strong>hepatitis</strong>-B surface antigen (HBsAg) carriers, <strong>and</strong> only two <strong>of</strong> these HBsAg carriers had liver enzymeabnormalities. None <strong>of</strong> the HCV-positive patients were HBsAg carriers (0 <strong>of</strong> 27 among HCVpositivepatients versus 16 <strong>of</strong> 75 among HCV-negative patients, p = 0.0055). Past <strong>in</strong>fection withHBV was found <strong>in</strong> 67 exam<strong>in</strong>ees (66%) (45 <strong>of</strong> 75 HCV-negative patients <strong>and</strong> 22 <strong>of</strong> 27 HCVpositivepatients, p = 0.058). However, similar proportions <strong>of</strong> patients from both groups had past<strong>and</strong> present exposure to HBV [61 (81.3%) <strong>of</strong> 75 among HCV-negative patients versus 22 (81.5%)<strong>of</strong> 27 among HCV-positive patients]. Only 14 patients (13.7%) had no exposure to either HCV orHBV. Possible risk factors were use <strong>of</strong> nondisposable needles dur<strong>in</strong>g mass vacc<strong>in</strong>ation <strong>in</strong> theU.S.S.R. or possible <strong>in</strong>trafamilial spread. The study concluded that immigrant Jews from formerAsiatic U.S.S.R. republics have the highest rate <strong>of</strong> HCV positivity ever reported, <strong>and</strong> many <strong>of</strong>them have past <strong>and</strong> present HBV <strong>in</strong>fection. Measures to prevent <strong>in</strong>trafamilial <strong>transmission</strong> <strong>of</strong> both<strong>virus</strong>es should be <strong>in</strong>stituted.Goldste<strong>in</strong> ST, Zhou F, Hadler SC, Bell BP, Mast EE, Margolis HS. A mathematical model toestimate global <strong>hepatitis</strong> B disease burden <strong>and</strong> vacc<strong>in</strong>ation impact. Int J Epidemiol 2005; 34:1329-1339.Division <strong>of</strong> Viral Hepatitis, Centers for Disease Control <strong>and</strong> <strong>Prevention</strong>, Atlanta, GA 30333, USA.sgoldste<strong>in</strong>@cdc.govLimited data are available regard<strong>in</strong>g global <strong>hepatitis</strong> B <strong>virus</strong> (HBV)-related morbidity <strong>and</strong>mortality <strong>and</strong> potential reduction <strong>in</strong> disease burden from <strong>hepatitis</strong> B vacc<strong>in</strong>ation. A model wasdeveloped to calculate the age-specific risk <strong>of</strong> acquir<strong>in</strong>g HBV <strong>in</strong>fection, acute <strong>hepatitis</strong> B (illness<strong>and</strong> death), <strong>and</strong> progression to chronic HBV <strong>in</strong>fection. HBV-related deaths among chronically<strong>in</strong>fected persons were determ<strong>in</strong>ed from HBV-related cirrhosis <strong>and</strong> hepatocellular carc<strong>in</strong>oma(HCC) mortality curves, adjusted for background mortality. The effect <strong>of</strong> <strong>hepatitis</strong> B vacc<strong>in</strong>ationwas calculated from vacc<strong>in</strong>e efficacy <strong>and</strong> vacc<strong>in</strong>ation series coverage, with <strong>and</strong> withoutadm<strong>in</strong>istration <strong>of</strong> the first dose <strong>of</strong> vacc<strong>in</strong>e with<strong>in</strong> 24 h <strong>of</strong> birth (i.e. birth dose) to prevent <strong>per<strong>in</strong>atal</strong>HBV <strong>in</strong>fection. For the year 2000, the model estimated 620,000 persons died worldwide fromHBV-related causes: 580,000 (94%) from chronic <strong>in</strong>fection-related cirrhosis <strong>and</strong> HCC <strong>and</strong> 40,000(6%) from acute <strong>hepatitis</strong> B. In the surviv<strong>in</strong>g birth cohort for the year 2000, the model estimatedthat without vacc<strong>in</strong>ation, 64.8 million would become HBV-<strong>in</strong>fected <strong>and</strong> 1.4 million would diefrom HBV-related disease. Infections acquired dur<strong>in</strong>g the <strong>per<strong>in</strong>atal</strong> period, <strong>in</strong> early childhood (< 5years old), <strong>and</strong> > or = 5 years <strong>of</strong> age accounted for 21, 48, <strong>and</strong> 31% <strong>of</strong> deaths, respectively.Rout<strong>in</strong>e <strong>in</strong>fant <strong>hepatitis</strong> B vacc<strong>in</strong>ation, with 90% coverage <strong>and</strong> the first dose adm<strong>in</strong>istered at birthwould prevent 84% <strong>of</strong> global HBV-related deaths. Globally, most HBV-related deaths result fromthe chronic sequelae <strong>of</strong> <strong>in</strong>fection acquired <strong>in</strong> the <strong>per<strong>in</strong>atal</strong> <strong>and</strong> early childhood periods. Inclusion <strong>of</strong><strong>hepatitis</strong> B vacc<strong>in</strong>e <strong>in</strong>to national <strong>in</strong>fant immunization programs could prevent > 80% <strong>of</strong> HBVrelateddeaths.Gong XH, Liu LR, Jia L, Li YH, X<strong>in</strong>g YL, Wang QY. Epidemiological effect <strong>of</strong> <strong>hepatitis</strong> Bimmunization among newborn babies <strong>in</strong> Beij<strong>in</strong>g. Zhonghua Gan Zang B<strong>in</strong>g Za Zhi 2003; 11:201-202. [Article <strong>in</strong> Ch<strong>in</strong>ese]The objective was to evaluate the epidemiological effect <strong>of</strong> <strong>hepatitis</strong> B immunization amongnewborn babies <strong>in</strong> Beij<strong>in</strong>g. A multistage sampl<strong>in</strong>g method was used for the collection <strong>of</strong>immunization cards, field epidemiological survey on <strong>hepatitis</strong> B <strong>virus</strong> (HBV) immunization <strong>of</strong>children, analysis <strong>of</strong> <strong>in</strong>fectious disease reports. HBsAg, anti-HBs <strong>and</strong> anti-HBc levels weredetected by solid phase radioimmunoassays (SPRIA). The <strong>in</strong>cidence <strong>of</strong> <strong>hepatitis</strong> B <strong>in</strong> children <strong>of</strong> 017

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