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Figure INF-9. Prevalence of markers of HBV infection estimated among national and subnational samples of injecting drug users 2005 to 2006, where data are available [see all figures in this series...]

Part (ii) Percentage positive for current infection (HBsAg)


Dark squares are samples with national coverage; blue triangle are samples with subnational (including local or regional) coverage.

Differences between countries have to be interpreted with caution owing to different types of settings and/or study methods; national sampling strategies vary.

Data for Portugal include non-IDUs and therefore may underestimate prevalence among IDUs (proportion of non-IDUs in the samples not known).

Data for Portugal, Romania and Cyprus are limited to prevalence among IDUs in treatment and may not be representative of prevalence among IDUs who are not in treatment.

Countries are presented by order of increasing prevalence, based on the average of national data or, if not available, of subnational data.

Related links:

Statistical bulletin 2007: Figure INF-10 part (i)

For primary sources, study details and data before 2005, see Table INF-14, Table INF-15 and Table INF-0.

See also ‘General notes for interpreting data’ on the Explanatory notes and help page


Reitox national focal points

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Page last updated: Thursday, 17 July 2008