non-A non-Badj.
/nɒnˌeɪ nɒnˈbiː/, U.S. /nɑnˈeɪ nɑnˈbi/ Medicine.
Not caused by or associated with the hepatitis A and B viruses; (originally) spec. designating the type of viral hepatitis that was subsequently identified as hepatitis C. Also as postmodifier.
ΚΠ
1975 Lancet 1 Nov. 841/2 The aetiology of non-A, non-B hepatitis after transfusion remains obscure.
1984 J. R. Tighe & D. R. Davies Pathol. (ed. 4) xvii. 160 Hepatitis non A-non B is now the commonest form of hepatitis.
1984 Times 12 Nov. 14/4 The existence of at least one other strain [of hepatitis] has been apparent during the past six or seven years... In the United States up to 90 per cent of transfusion-associated illness is caused by this third ‘non-a-non-b’ [sic] agent.
1995 Hepatology 22 1661 More than one third of pediatric patients who presented with non-A, non-B fulminant liver failure (FLF) also developed aplastic anemia (AA) either before or shortly after liver transplantation.
2001 Jrnl. Clin. Microbiol. 39 3040 Hepatitis E virus (HEV) is the major cause of enterically transmitted non-A, non-B hepatitis in many developing countries.
This is a new entry (OED Third Edition, December 2003; most recently modified version published online March 2022).
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adj.1975