Table 2.

Risk factors associated with acute hepatitis A infection

^*Adjusted for study year; ^†Adjusted for study year, contact with HAV-infected family members in the same household or exposure to HAV via other routes, overseas travel, consumption of raw shellfish, seafood, meat and other raw foods, drinking bottled water, and occupation that involves handling food; ^‡Variables applicable only to the 2009 survey (n = 548 case-control pairs); ^§Sexual intercourse, everyday contact, medical contact, use of syringes, etc; ^∥Overseas travel 2-6 weeks before diagnosis; ^¶Including oysters, mussels and clams. OR, odds ratio; CI, confidence interval.