| environmental risk factors for hepatitis a infection in the zenica-doboj canton, bosnia and herzegovina. | in the zenica-doboj canton, 1106 hepatitis a virus (hav) infections were reported during 2000 (an incidence rate of 252/100 000 population), with 996 (90.1%) cases occurring in nine community-wide outbreaks. analysis of water supplies showed that 398 (19.1%) samples contained coliforms, including 202 (50.8%) that were contaminated with thermotolerant escherichia coli. sewage sanitation systems were absent or substandard in 53 910 (81.8%) rural households. the group most affected during outbreaks ... | 2005 | 15679489 |