Hep B Booster Symptoms. However, many people will have no symptoms or have vague symptoms such as fatigue and not know that they have the infection. Nausea or vomiting diarrhoea abdominal pain;

Pain or discomfort in the arms, jaw, back, or neck. In neonates and young children, particularly those <1 year of age, the initial infection is usually asymptomatic. There is a small risk of liver failure (less than 1 percent) with acute.