Safety of Flavoured Ice Beverage Introduction 1. Food borne transmission through faecal-oral route is the most important mode of transmission for hepatitis A. 3. Hepatitis A may be asymptomatic, or produces acute symptoms depending on the age of the infected persons.
Adults exhibit more severe symptoms while infants usually show no signs.
The incubation period of the disease ranges from two to six weeks. Symptoms can include fatigue, poor appetite, nausea, vomiting, diarrhoea, abdominal discomfort, jaundice and tea-coloured urine. Because of its unique habitat and special feeding mechanism, shellfish especially bivalve shellfish is an important vehicle responsible for transmission of hepatitis A. Risk Assessment and Public Health Significance 1. Shellfish is a broad term for all aquatic animals that have a shell of some kind. Because bivalve shellfish are filter feeders, they absorb food particles and nutrients by filtering out the seawater.