Overview
            Infection with the hepatitis D virus (HDV), or delta agent, occurs only in people who are already infected with the hepatitis B virus (HBV). HDV infection may make HBV infection more severe. 
            In people who have long-term (chronic) HBV infection, HDV infection can make liver disease worse. Or it can cause a person who did not have symptoms before to develop liver problems more rapidly. 
            Vaccination against hepatitis B will also prevent hepatitis D virus infection. 
            Hepatitis D virus infection is rare in the United States. 
           
          
          
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                  Current as of:  September 10, 2024
               
              
             
           
         
        
          
            
              Current as of: September 10, 2024