Hepatitis D virus
Hepatitis D may increase the severity of symptoms associated with all forms of hepatitis B.
Symptoms may include:
Mandell GL, Bennett JE, Dolin R. Principles and Practice of Infectious Diseases. 5th ed. London: Churchill Livingstone; 2000:1870-1871.
Long SS, Pickering LK, Prober CG. Principles and Practice of Pediatric Infectious Diseases. 2nd ed. New York, NY: Elsevier; 2003:1097-1101.