TITLE

Decrease in seroprevalence of Hepatitis A after the implementation of nationwide disposable tableware use in Taiwan

AUTHOR(S)
Shih-Bin Su; Ching-Yih Lin; Ming-Jen Sheu; Wei-Chih Kan; Hsien-Yi Wang; How-Ran Guo
PUB. DATE
January 2010
SOURCE
BMC Public Health;2010, Vol. 10, p719
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Taiwan is an endemic area of viral hepatitis, including hepatitis A, which is transmitted mainly from the fecal-oral route. In order to reduce the transmission through food intake, the government implemented a policy of nationwide disposal tableware use in public eating places in 1982. We conducted a study to estimate the seroprevalence of Hepatitis A in a group of workers in Taiwan in 2005, determine the risk factors, and compare seroprevalence to published estimates in Taiwan to evaluate changes in the seroprevalence after the implementation of the nationwide disposal tableware use. Methods: We recruited workers of an industrial park during their annual health examinations in 2005 and measured their anti-hepatitis A virus IgG titer using microparticle enzyme immunoassay. We compared the seroprevalence across different birth cohorts within the study population and also analyzed data from previous studies. Results: The overall sero-positive rate was 22.0% in the 11,777 participants. The rate was much lower among those who were covered by the program since birth (born after 1982) in comparison with those who were not (2.7% vs. 25.3%, p < 0.001). From the analyses of data from pervious studies, we found the age-specific rates were similar in cohorts born in or after 1982 across studies conducted in different time periods but decreased with the calendar year in cohorts born before 1982. In particular, the age-specific seroprevalence dropped to less than one third in a three-year period among those who were born around 1982. Conclusions: Data from both the current and previous studies in different time periods supported the effectiveness of disposal tableware in preventing the transmission of hepatitis A.
ACCESSION #
57221417

 

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