| occult hepatitis b virus infection in hemodialysis patients in recife, state of pernambuco, brazil. | persistence of the hepatitis b virus (hbv) genome in individuals negative for the hbv surface antigen (hbsag) reflects occult infection. the aim of this study was to identify occult hbv infection among hemodialysis patients at 5 clinics in recife, state of pernambuco, brazil, between august 2006 and august 2007. | 2012 | 23152336 |
| hepatitis g virus infection in patients with hepatocellular carcinoma in recife, brazil. | the evidence of a higher incidence of hepatitis g virus (hgv) infection among patients with hepatocellular carcinoma (hcc) and the relatively high prevalence of patients with primary liver carcinoma without apparent risk factors in our country motivated the present study, the objective of which was to determine the frequency of hgv-ribonucleic acid (rna) in a series of patients with hcc. the diagnosis of hcc was established based on alpha-fetoprotein levels (>400 ng/ml), a compatible image and/o ... | 2007 | 17704535 |
| number of recent sexual partners among blood donors in brazil: associations with donor demographics, donation characteristics, and infectious disease markers. | background: brazilian blood centers ask candidate blood donors about the number of sexual partners in the past 12 months. candidates who report a number over the limit are deferred. we studied the implications of this practice on blood safety. study design and methods: we analyzed demographic characteristics, number of heterosexual partners, and disease marker rates among 689,868 donations from three brazilian centers between july 2007 and december 2009. donors were grouped based on maximum numb ... | 2011 | 21756264 |