Investigation of community based hepatitis a outbreak in a district in Northern Kerala

Background: Hepatitis A is the most common form of acute viral hepatitis worldwide. The disease closely associated with unsafe water or food, inadequate sanitation and poor personal hygiene. Objectives: An epidemiological investigation was carried out to investigate outbreak, describe features recommend measures for control. case sheet prepared, definition formulated. Result: 82 cases confirmed. According investigation, twenty students one religious teacher staying at nearby mosque were infected majority belonging age group 15 -25 years. There clustering in two wards this panchayath mostly which around mosque. Attack rate found be more 15–25 years(13.31%). Males (3.37%) had an attack almost 3.5 times higher than that females (0.96%). One death reported. fatality 1.21. Conclusion: provision safe drinking proper needs considered high priority by Panchayath. should attempts health awareness handwashing, chlorination adequate distance between septic tank source households.