Background: Hepatitis A often occurs in school among students in the form of an outbreak. The transmission was through fecal-oral (common source) provided that the epidemic curve is close to propagated. The aim of the current study was to analyze the determinants of Hepatitis A infection among students. Design and methods: This study was a case-control study which was conducted at SMAN Plus with a sample size of 80 students chosen by using simple random sampling. The data obtained were then analyzed using logistic regression with 95 confidence level (alpha = 0.05), while the strength of the relationship between variables was identified using odds ratio (OR). Results: Most of the students were at the age of 17 to 19 years old (65) and male (57.5). The average age in the case group was 17.1 years old, while in the control group was 16.75 years old. The habit of consuming raw foods (p=0.001) as well as eating and drink at the same time during an activity (p=0.000) had a significant influence on the outbreak of Hepatitis A in the curve epidemic of common source. Conclusion: The outbreak is confirmed as a transmission occurs through fecal-oral which the common source epidemic curve. Risk factors that have been proven to be related to hepatitis A include consuming raw food, eating shared meals during an activity, and drinking with shared drinking utensils.
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