BACKGROUND: At most blood centers in the United States routine testing of donations for Trypanosoma cruzi using an enzyme-linked immunosorbent assay (ELISA) is followed by supplemental testing by radioimmunoprecipitation assay (RIPA). The objective of this study was to report the results of routine testing and risk factor data from allogeneic blood donors. STUDY DESIGN AND METHODS: T. cruzi testing data from January 2007 through December 2009 were analyzed, and risk factor interviews and follow-up studies were conducted on seroreactive donors. Prevalences of confirmed infection and risk factors associated with infection were assessed using logistic and multivariable logistic regression. RESULTS: Of 2,940,491 allogeneic donations from 1,183,076 donors, 305 (0.01% per donation tested and 0.026% per blood donor) were repeat reactive (RR) and 89 of those were confirmed positive by RIPA, yielding an overall seroprevalence of 1 per 33,039 donations and 1 per 13,292 donors. Country of birth and US blood center location differences in the seroprevalence of T. cruzi were evident. The odds of confirmed infection were highest if the donor reported having been bitten by the reduviid (kissing) bug (odds ratio [OR], 76.1; 95% confidence interval [CI], 11.1-3173) followed by having lived in a rural area of Latin America (OR, 38.6; 95% CI, 15.1-102.5). In multivariable analyses, having spent 3 months or more in Mexico or Central and/or South America was associated with the highest odds of RIPA-confirmed infection (OR, 8.5; 95% CI, 2.7-26.5). Polymerase chain reaction (PCR) testing of ELISA RR donors exhibited low sensitivity (1/22 [4%] RIPA-confirmed donors was PCR positive). CONCLUSION: Risk factors for confirmed infection in US blood donors are consistent with the known epidemiology of Chagas disease. Blood donors or transfusions do not substantially contribute to the burden of T. cruzi infection in the United States.
BACKGROUND: At most blood centers in the United States routine testing of donations for Trypanosoma cruzi using an enzyme-linked immunosorbent assay (ELISA) is followed by supplemental testing by radioimmunoprecipitation assay (RIPA). The objective of this study was to report the results of routine testing and risk factor data from allogeneic blood donors. STUDY DESIGN AND METHODS: T. cruzi testing data from January 2007 through December 2009 were analyzed, and risk factor interviews and follow-up studies were conducted on seroreactive donors. Prevalences of confirmed infection and risk factors associated with infection were assessed using logistic and multivariable logistic regression. RESULTS: Of 2,940,491 allogeneic donations from 1,183,076 donors, 305 (0.01% per donation tested and 0.026% per blood donor) were repeat reactive (RR) and 89 of those were confirmed positive by RIPA, yielding an overall seroprevalence of 1 per 33,039 donations and 1 per 13,292 donors. Country of birth and US blood center location differences in the seroprevalence of T. cruzi were evident. The odds of confirmed infection were highest if the donor reported having been bitten by the reduviid (kissing) bug (odds ratio [OR], 76.1; 95% confidence interval [CI], 11.1-3173) followed by having lived in a rural area of Latin America (OR, 38.6; 95% CI, 15.1-102.5). In multivariable analyses, having spent 3 months or more in Mexico or Central and/or South America was associated with the highest odds of RIPA-confirmed infection (OR, 8.5; 95% CI, 2.7-26.5). Polymerase chain reaction (PCR) testing of ELISA RR donors exhibited low sensitivity (1/22 [4%] RIPA-confirmed donors was PCR positive). CONCLUSION: Risk factors for confirmed infection in US blood donors are consistent with the known epidemiology of Chagas disease. Blood donors or transfusions do not substantially contribute to the burden of T. cruzi infection in the United States.
Authors: Melissa N Garcia; David Aguilar; Rodion Gorchakov; Susan N Rossmann; Susan P Montgomery; Hilda Rivera; Laila Woc-Colburn; Peter J Hotez; Kristy O Murray Journal: Am J Trop Med Hyg Date: 2014-11-04 Impact factor: 2.345
Authors: Ester C Sabino; Tzong-Hae Lee; Lani Montalvo; Megan L Nguyen; David A Leiby; Danielle M Carrick; Marcia M Otani; Elizabeth Vinelli; David Wright; Susan L Stramer; Michael Busch Journal: Transfusion Date: 2012-09-25 Impact factor: 3.157
Authors: Ester C Sabino; Antonio L Ribeiro; Vera M C Salemi; Claudia Di Lorenzo Oliveira; Andre P Antunes; Marcia M Menezes; Barbara M Ianni; Luciano Nastari; Fabio Fernandes; Giuseppina M Patavino; Vandana Sachdev; Ligia Capuani; Cesar de Almeida-Neto; Danielle M Carrick; David Wright; Katherine Kavounis; Thelma T Goncalez; Anna Barbara Carneiro-Proietti; Brian Custer; Michael P Busch; Edward L Murphy Journal: Circulation Date: 2013-02-07 Impact factor: 29.690
Authors: Sheba K Meymandi; Colin J Forsyth; Jonathan Soverow; Salvador Hernandez; Daniel Sanchez; Susan P Montgomery; Mahmoud Traina Journal: Clin Infect Dis Date: 2017-05-01 Impact factor: 9.079