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Volume 15, Number 4—April 2009
THEME ISSUE
The Amazon Region

Letter

Hepatitis C Virus in Blood Donors, Brazil

Kátia Luz TorresComments to Author , Adriana Malheiro, Adriana Tateno, Tatiane Amabile de Lima, Laura Patricia Viana Maia, João Paulo Diniz Pimentel, Márcia Poinho Encarnação de Morais, Christiane Santana de Melo Usui, Flavia de Oliveira Braga, Igor Araújo Ferreira Silva, Felicien Vasquez, and José Eduardo Levi
Author affiliations: Fundação de Hematologia e Hemoterapia do Amazonas, Manaus, Amazon, Brazil (K.L. Torres, A. Malheiro, T.A. de Lima, L.P.V. Maia, J.P.D. Pimentel, M.P.E. de Morais, C.S. de Melo Usui, F. Vasquez); Universidade Federal do Amazonas, Manaus (A. Malheiro, F. de Oliveira Braga, I.A.F. Silva); Instituto de Medicina Tropical de São Paulo, São Paulo, Brazil (J.E. Levi)

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Figure

Distribution of hepatitis C virus (HCV) enzyme immunoassay signal-to-cutoff (S/CO) values by recombinant immunoblot assay (RIBA) interpretations among HCV-RNA–positive [PCR (+)] and HCV-RNA–negative [PCR (−)] donated blood samples. Group a differs statistically from all groups b with 95% confidence intervals. The Mann-Whitney test was used to compare the 2 groups. (+), positive; (−), negative; (Ind), indeterminate. *S/CO values outside interquartile intervals; †Kruskal-Wallis test.

Figure. Distribution of hepatitis C virus (HCV) enzyme immunoassay signal-to-cutoff (S/CO) values by recombinant immunoblot assay (RIBA) interpretations among HCV-RNA–positive [PCR (+)] and HCV-RNA–negative [PCR (−)] donated blood samples. Group a differs statistically from all groups b with 95% confidence intervals. The Mann-Whitney test was used to compare the 2 groups. (+), positive; (−), negative; (Ind), indeterminate. *S/CO values outside interquartile intervals; †Kruskal-Wallis test.

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