NANBV diagnostics and vaccines

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving virus or bacteriophage

Reexamination Certificate

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C424S189100, C424S228100, C530S324000, C530S325000, C530S326000, C530S327000, C530S350000

Reexamination Certificate

active

06346375

ABSTRACT:

TECHNICAL FIELD
The invention relates to materials and methodologies for managing the spread of non-A, non-B hepatitis virus (NANBV) infection. More specifically, it relates to diagnostic DNA fragments, diagnostic proteins, diagnostic antibodies and protective antigens and antibodies for an etiologic agent of NANB hepatitis, i.e., hepatitis C virus.
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CITED PATENTS
U.S. Pat. No. 4,341,761
U.S. Pat. No. 4,399,121
U.S. Pat. No. 4,427,783
U.S. Pat. No. 4,444,887
U.S. Pat. No. 4,466,917
U.S. Pat. No. 4,472,500
U.S. Pat. No. 4,491,632
U.S. Pat. No. 4,493,890
U.S. Pat. No. 4,816,467
BACKGROUND ART
Non-A, Non-B hepatitis (NANBH) is a transmissible disease or family of diseases that are believed to be viral-induced, and that are distinguishable from other forms of viral-associated liver diseases, including that caused by the known hepatitis viruses, i.e., hepatitis A virus (HAV), hepatitis B virus (HBV), and delta hepatitis virus (HDV), as well as the hepatitis induced by cytomegalovirus (CMV) or Epstein-Barr virus (EBV). NANBH was first identified in transfused individuals. Transmission from man to chimpanzee and serial passage in chimpanzees provided evidence that NANBH is due to a transmissible infectious agent or agents. However, the transmissible agent responsible for NANBH is still unidentified and the number of agents which are causative of the disease are unknown.
Epidemiologic evidence is suggestive that there may be three types of NANBH: the water-borne epidemic type; the blood or needle associated type; and the sporadically occurring (community acquired) type. However, the number of agents which may be the causative of NANBH are unknown.
Clinical diagnosis and identification of NANBH has been accomplished primarily by exclusion of other viral markers. Among the methods used to detect putative NANBV an

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