Key result
Wastewater work was not significantly associated with an increased prevalence of hepatitis A virus antibodies (prevalence ratio 1.3; 95% CI 0.7 to 2.4).
Why the study?
Does wastewater work increase the prevalence of hepatitis A virus infection in workers?
Cross-Sectional (n=302)
Does wastewater work increase the prevalence of hepatitis A virus infection in workers?
Occupational exposure to wastewater does not appear to significantly increase the risk of hepatitis A virus infection, consistent with CDC positions.
To provide information concerning potential occupational transmission of hepatitis A virus (HAV) among wastewater workers in a large city in the United States, a cross-sectional survey was performed using a saliva test to detect antibodies to HAV (anti-HAV). Fifty-nine (20%) of 302 participants tested positive for anti-HAV. After controlling for the confounding effects of age and race, wastewater work was not significantly associated with an increase in the prevalence of anti-HAV (prevalence ratio = 1.3; 95% confidence interval 0.7 to 2.4). Additionally, when examining only the wastewater workers, no statistically significant occupational risk factors for anti-HAV were identified. The results of this survey are consistent with the position of the Centers for Disease Control and Prevention regarding groups at risk for HAV infection.
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Trout et al. (2000) conducted a cross-sectional in Hepatitis A virus (HAV) infection (n=302). Wastewater work vs. Non-wastewater work was evaluated on Presence of antibodies to HAV (anti-HAV) (Prevalence ratio 1.3, 95% CI 0.7 to 2.4). Wastewater work was not significantly associated with an increased prevalence of hepatitis A virus antibodies (prevalence ratio 1.3; 95% CI 0.7 to 2.4).
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