Abstract
Membranous glomerulonephritis is a recognized complication of hepatitis B virus infection, especially in children, and an occasional complication of hepatitis C virus infection. Co-infection with the two viruses has not previously been described in membranous glomerulonephritis. We report five black African children with membranous glomerulonephritis who were co-infected with hepatitis B and C viruses. Proof of hepatitis B virus infection was obtained using serological and molecular detection methods. Hepatitis C virus infection was demonstrated using reverse transcription to convert viral RNA to cDNA followed by amplification of the cDNA using a double round of the polymerase chain reaction with confirmation by Southern hybridization and nucleotide sequencing. The clinical, biochemical, immunological, and pathological characteristics of the co-infected children, as well as the natural history of the disease, did not differ from those in 24 children with hepatitis B virus-associated membranous glomerulonephritis. Of the 24 family and household contacts of the five co-infected children, 7 were infected with hepatitis B virus, 1 with hepatitis C virus, and none with both viruses. It is not known whether infection with the two viruses was acquired simultaneously or sequentially. Thus, black children with membranous glomerulonephritis are occasionally co-infected with hepatitis B and C viruses. The resulting disease appears to be no more severe than that in children infected with hepatitis B virus alone.
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