HEPATITIS A and virus(HAv) Hepatitis a is caused by infection with the hepatitis a virus, which is an RNa virus in the picornavirus family Only one single serotype worldwide has been discovered. unlike some other viruses that have subtypes Acute disease and asymptomatic infection No chronic infection Protective antibodies develop in response to infection confers lifelong immunityHEPATITIS A and Virus(HAV) • Hepatitis A is caused by infection with the hepatitis A virus, which is an RNA virus in the picornavirus family. • Only one single serotype worldwide has been discovered, unlike some other viruses that have subtypes. • Acute disease and asymptomatic infection • No chronic infection • Protective antibodies develop in response to infection - confers lifelong immunity