Population
1156 reported cases of Hepatitis A virus disease from 6 US sites conducting hepatitis surveillance
Design
Cross-sectional
Authors
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Supports targeted HepA vaccination for travelers; leaves open whether incidence trends warrant updated surveillance.
International travel is the predominant risk factor for Hepatitis A transmission in the US, highlighting the need for vaccination in at-risk travelers.
Klevens et al. (2010) studied this question.
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