Published in Vaccine Weekly, November 2nd, 2011
"The current study results were compared with those of a previous study conducted in 1998 involving the same location. There was a marked decrease in the prevalence of anti-HAV between 1998 and 2008. While anti-HAV seroprevalence rates in the current study were 4.6% in children aged 1-4 years, 23% in children...
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Source: Vaccine Weekly (2011-11-02)
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