non-A, non-B hepatitis
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non-A, non-B hep·a·ti·tis
hepatitis caused by any number of infectious agents not detectable by methods that reveal the presence of hepatitis viruses A and B.
Synonym(s): NANB hepatitis
non-A, non-B hepatitis(nŏn-ā′ nŏn-bē′)
Any of various forms of hepatitis, including hepatitis C and hepatitis E, caused by a virus that is antigenically different from hepatitis viruses A and B.
non-A, non-B hepatitisA group of hepatitides which are the major cause of transfusion-related hepatitis Incidence 7/105/yr–US Risk factors 42% IV drug abuse, 40% unknown risk factors, 6% sexual contact, 6% blood transfusion, 3% household contact, 2% health care professional; of the ±150,000 new cases/yr–US, 30-50% become chronic carriers–20% of these develop cirrhosis; NANBH may also be enteric–parenteral; NANBH is most commonly due to HCV and enteric NANBH to HEV Management IFN-α2b results in significant histologic reversal and serum ALA response Prognosis No ↑ in overall mortality with chronic NANBH, but ↑ liver-related deaths. See Hepatitis.
non-A, non-B hep·a·ti·tis(NANB) (hep'ă-tī'tis)
Hepatitis caused by any number of infectious agents not detectable by methods that reveal the presence of hepatitis viruses A and B.