Human immunodeficiency virus test-seeking blood donors in a large blood bank in São Paulo, Brazil
Thelma Goncalez
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorEster Sabino
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorNanci Sales
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorYea-Hung Chen
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorDalton Chamone
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorMichael Busch
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorEdward Murphy
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorBrian Custer
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorWilli McFarland
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorThelma Goncalez
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorEster Sabino
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorNanci Sales
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorYea-Hung Chen
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorDalton Chamone
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorMichael Busch
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorEdward Murphy
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorBrian Custer
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorWilli McFarland
From the Fundacão Pro-Sangue/Hemocentro São Paulo and the Department of Hematology, São Paulo University, São Paulo, Brazil; the San Francisco Department of Public Health; Blood Systems Research Institute; and Global Health Sciences, University of California at San Francisco, San Francisco, California.
Search for more papers by this authorPresented at the AABB annual meeting, New Orleans, LA, October 2009.
Abstract
BACKGROUND: Persons with human immunodeficiency virus (HIV) risk behaviors are excluded from donation to reduce the risk of transfusion-transmitted infection. Persons donating to be tested for HIV may therefore deny risk behaviors.
STUDY DESIGN AND METHODS: A random sample of donors completed a survey on motivations, knowledge, and attitudes on the screening process. Donors were considered test seekers if they agreed with two statements “I think that blood donation is a good, fast, and anonymous way to get my blood tested” and “I donate to get my test results.” This study was conducted from June to November 2006 at the largest blood bank in São Paulo, Brazil.
RESULTS: Of 3061 participants, 208 (7%) were test seekers. They tended to be male and had a lower educational level. They were more likely to have incorrect knowledge about blood safety (e.g., not knowing that a unit can test antibody negative and still transmit infection, 50% vs. 42%, p = 0.02), express dissatisfaction with screening questions (e.g., feeling that important questions were not asked, 14% vs. 5%, p < 0.01), and concur that donors do not answer questions truthfully (e.g., donors have more sexual partners than they admit, 29% vs. 18%, p < 0.01). Test seekers were more likely to believe that it is acceptable to donate blood to get tested for HIV (41% vs. 10%, p < 0.01).
CONCLUSIONS: Test-seeking motivation, coupled with low knowledge of window period risk, is counter to improving blood safety and to donor prevention needs. Donor education needs to be improved along with availability of appropriate HIV counseling and testing.
REFERENCES
- 1 WHO. Universal access to safe blood transfusion. Geneva: WHO. [cited 2010 Feb 11]. Available from: http://www.who.int/bloodsafety/universalbts/en
- 2 WHO. Screening donated blood for transfusion-transmissible infections. Geneva: WHO. [cited 2010 Feb 11]. Available from: http://www.who.int/bloodsafety/ScreeningTTI.pdf
- 3 Schreiber GB, Busch MP, Kleinman SH, Korelitz JJ. The risk of transfusion-transmitted viral infections. The Retrovirus Epidemiology Donor Study. N Engl J Med 1996; 334: 1685-90.
- 4 Barreto CC, Sabino EC, Goncalez TT, Laycock ME, Pappalardo BL, Salles NA, Wright DJ, Chamone DF, Busch MP. Prevalence, incidence, and residual risk of human immunodeficiency virus among community and replacement first-time blood donors in Sao Paulo, Brazil. Transfusion 2005; 45: 1709-14.
- 5 Stramer SL, Glynn SA, Kleinman SH, Strong DM, Caglioti S, Wright DJ, Dodd RY, Busch MP; National Heart, Lung, and Blood Institute Nucleic Acid Test Study Group. Detection of HIV-1 and HCV infections among antibody-negative blood donors by nucleic acid-amplification testing. N Engl J Med 2004; 351: 760-8.
- 6 Busch MP, Glynn SA, Stramer SL, Strong DM, Caglioti S, Wright DJ, Pappalardo B, Kleinman SH; NHLBI-REDS NAT Study Group. A new strategy for estimating risks of transfusion-transmitted viral infections based on rates of detection of recently infected donors. Transfusion 2005; 45: 254-64.
- 7 Weber B. Screening of HIV infection: role of molecular and immunological assays. Expert Rev Mol Diagn 2006; 6: 399-411.
- 8 Scuracchio PS, Poli MC, Lemos MM, Oliveira Filho AG, Salles NA, Chamone DA, Magri M, Cavalcante NJ, Collela R. Detection of HIV-1 infection in blood donors during the immunological window period using the nucleic acid-amplification technology. Transfus Med 2007; 17: 200-4.
- 9 Dodd R, Kurt Roth W, Ashford P, Dax EM, Vyas G. Transfusion medicine and safety. Biologicals 2009; 37: 62-70.
- 10 Goncalez TT, Sabino EC, Murphy EL, Chen S, Chamone DA, McFarland W. Human immunodeficiency virus test-seeking motivation in blood donors, Sao Paulo, Brazil. Vox Sang 2006; 90: 170-6.
- 11 Williams AE, Thomson RA, Schreiber GB, Watanabe K, Bethel J, Lo A, Kleinman SH, Hollingsworth CG, Nemo GJ. Estimates of infectious disease risk factors in US blood donors. Retrovirus Epidemiology Donor Study. JAMA 1997; 277: 967-72.
- 12 Lefrere JJ, Elghouzzi MH, Paquez F, N'Dalla J, Nubel L. Interviews with anti-HIV-positive individuals detected through the systematic screening of blood donations: consequences on predonation medical interview. Vox Sang 1992; 62: 25-8.
- 13 Stigum H, Bosnes V, Magnus P, Orjasaeter H. Risk behaviour among blood donors who give blood in order to be tested for the human immunodeficiency virus. Vox Sang 2001; 80: 24-7.
- 14 Stigum H, Bosnes V, Orjasaeter H, Heier HE, Magnus P. Risk behavior in Norwegian blood donors. Transfusion 2001; 41: 1480-5.
- 15 Lau JT, Thomas J, Lin CK. HIV-related behaviours among voluntary blood donors in Hong Kong. AIDS Care 2002; 14: 481-92.
- 16 Mvere D, Shamu R, Makoni R, Lloyd S, Nhau E, McFarland W. Strong preference “to donate” among HIV-positive blood donors in Zimbabwe. Lancet 1996; 347: 902.
- 17 De Almeida Neto C, McFarland W, Murphy EL, Chen S, Nogueira FA, Mendrone A Jr, Salles NA, Chamone DA, Sabino EC. Risk factors for human immunodeficiency virus infection among blood donors in Sao Paulo, Brazil, and their relevance to current donor deferral criteria. Transfusion 2007; 47: 608-14.
- 18 Tobian AA, Quinn TC. Herpes simplex virus type 2 and syphilis infections with HIV: an evolving synergy in transmission and prevention. Curr Opin HIV AIDS 2009; 4: 294-9.
- 19 Doll LS, Petersen LR, White CR, Ward JW. Human immunodeficiency virus type 1-infected blood donors: behavioral characteristics and reasons for donation. The HIV Blood Donor Study Group. Transfusion 1991; 31: 704-9.
- 20 Freeman EE, Weiss HA, Glynn JR, Cross PL, Whitworth JA, Hayes RJ. Herpes simplex virus 2 infection increases HIV acquisition in men and women: systematic review and meta-analysis of longitudinal studies. AIDS 2006; 20: 73-83.
- 21 Glynn JR, Biraro S, Weiss HA. Herpes simplex virus type 2: a key role in HIV incidence. AIDS 2009; 23: 1595-8.
- 22 Tobian AA, Ssempijja V, Kigozi G, Oliver AE, Serwadda D, Makumbi F, Nalugoda FK, Iga B, Reynolds SJ, Wawer MJ, Quinn TC, Gray RH. Incident HIV and herpes simplex virus type 2 infection among men in Rakai, Uganda. AIDS 2009; 23: 1589-94.
- 23 Muhib FB, Lin LS, Stueve A, Miller RL, Ford WL, Johnson WD, Smith PJ. A venue-based method for sampling hard-to-reach populations. Public Health Rep 2001; 116 Suppl 1: 216-22.
- 24 Goncalez TT, Sabino EC, Chen S, Salles NA, Chamone DA, McFarland W, Murphy EL. Knowledge, attitudes and motivations among blood donors in Sao Paulo, Brazil. AIDS Behav 2008; 12: S39-47.
- 25 Zou S, Notari EP, Musavi F, Dodd RY. Current impact of the confidential unit exclusion option. Transfusion 2004; 44: 651-7.
- 26 Korelitz JJ, Williams AE, Busch MP, Zuck TF, Ownby HE, Matijas LJ, Wright DJ. Demographic characteristics and prevalence of serologic markers among donors who use the confidential unit exclusion process: the Retrovirus Epidemiology Donor Study. Transfusion 1994; 34: 870-6.
- 27 Sümnig A, Konerding U, Kohlmann T, Greinacher A. Factors influencing confidential unit exclusions in blood donors. Vox Sang 2009;[Epub ahead of print.
- 28 O'Brien SF, Fan W, Xi G, Yi QL, Goldman M. Evaluation of the confidential unit exclusion form: the Canadian Blood Services experience. Vox Sang 2009; 98: 138-44.
- 29 Sanchez AM, Schreiber GB, Glynn SA, Bethel J, Kessler D, Chang D, Zuck TF; Retrovirus Epidemiology Donor Study. Blood-donor perceptions of health history screening with a computer-assisted self-administered interview. Transfusion 2003; 43: 165-72.
- 30 Katz LM, Cumming PD, Wallace EL. Computer-based blood donor screening: a status report. Transfus Med Rev 2007; 21: 13-25.
- 31 Katz LM, Cumming PD, Wallace EL, Abrams PS. Audiovisual touch-screen computer-assisted self-interviewing for donor health histories: results from two years experience with the system. Transfusion 2005; 45: 171-80.