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Incidence and estimated risk of residual transmission of hepatitis a virus and parvovirus B19 by blood transfusion in the state of Rio De Janeiro - Brazil: a retrospective study.
Virol J
January 2025
Laboratório de Desenvolvimento Tecnológico em Virologia, Instituto Oswaldo cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
Background: Nonenveloped viruses, such as hepatitis A virus (HAV) and parvovirus B19 (B19V), are not inactivated by detergents and solvents commonly used to manufacture plasma derivatives. Cases of transfusion-transmitted HAV and B19V have already been described in several countries. This study aimed to determine the incidence of HAV and B19V asymptomatic infections in blood donors from Rio de Janeiro and evaluate the residual risk of transmission to blood derivative recipients.
View Article and Find Full Text PDFWeak or partial D: Importance of molecular characterization of D variants.
Transfus Apher Sci
January 2025
ICMR-National Institute of Immunohaematology (NIIH), 13th Floor, K.E.M Hospital campus, Parel, Mumbai 400012, India. Electronic address:
This case report presents first case of RHD*weak D type 9 in a 38-year-old Indian patient with severe osteoarthritis of the left hip joint scheduled for total hip replacement surgery. During routine blood grouping, an unexpected weak reaction with anti-D was observed. Serological characterization using an extended partial D typing kit characterized the variant as DV.
View Article and Find Full Text PDFTransfusion-associated graft-versus-host disease (TA-GVHD) and graft-versus-host disease (GVHD): Pathophysiology and management (contrasted and compared).
Hematol Oncol Stem Cell Ther
January 2025
Hematology Laboratory-Blood Bank, Aretaieion Hospital, National and Kapodistrian University of Athens, Athens, Greece.
Transfusion of blood products is a common lifesaving medical procedure in clinical practice. However, it poses the risk of potential adverse reactions for the recipient. Transfusion-associated graft-versus-host-disease (TA-GVHD) is a rare adverse event, fatal in >90% of cases.
View Article and Find Full Text PDFRed cell antibodies or noise? A case series on reactivity against the ingredients in column matrix.
Asian J Transfus Sci
November 2023
Department of Transfusion Medicine, Tata Medical Center, Kolkata, West Bengal, India.
Noise in the immunohematological investigations can be described as a false reactivity of red blood cells (RBCs) in serologic testing that is not related to the interaction of RBC antigens and antibodies that the test system is intended to detect. These false-positive reactions can cause confusion during the cross-matching and RBC antibody screening and may result in delays in patient transfusion. Although these antibodies are predominantly clinically insignificant, proper laboratory work-up is indicated to avoid misidentification of a clinically significant antibody as a noise.
View Article and Find Full Text PDFA case report on weak subgroup of A: A.
Asian J Transfus Sci
May 2023
Department of Transfusion Medicine and Blood Bank, AIIMS, Raipur, Chhattisgarh, India.
A end is a weak subgroup of Blood group A, found rarely in general population, not detected by routine forward and reverse blood grouping, detected by Adsorption/Elution technique along with saliva testing for A, B and H antigens. Although it is subgroup of A but it lacks A antigen in saliva and contains only H antigen. A 25y/M was accepted for blood donation and showed weak/mf reaction with anti-A in forward grouping.
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