Kolawole A . Fasakin

The sub-continent of West Africa is made up of 16 countries: Benin, Burkina Faso, Cape Verde, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, The Gambia and Togo. As of 2018, the population of the sub-continent was estimated at about 381 million. The main challenge associated with blood transfusion service delivery across the sub-region concerns adequacy and safety. In this chapter, we highlighted the challenges associated with the delivery of a quality blood transfusion service in countries in the sub-region including: implementation of component therapy rather than whole blood transfusion, effective cold chain management of blood and blood products, alloimmunization prevention, implementation of column agglutination and automation rather than the convention manual tube method in blood transfusion testing, effective management of major haemorrhage, optimization of screening for transfusion transmissible infections, optimi...

Background: The success of any prevention of mother-to-child transmission (PMTCT) program is assessed by the proportion of HIV-exposed infants that sero-convert at the end of all risk exposures. Although adopting the best feeding option for HIV-exposed infants is one of the factors that impact PMTCT outcomes, there is limited data on the assessment of PMTCT success rates based on antiretroviral interventions and feeding options. This study assesses the success rate of PMTCT service based on antiretroviral interventions and feeding options. Methods: Eighty-five HIV-infected mothers previously in care were enrolled in a prospective cohort study. Folders and structured questionnaires were used to extract data on mother-infant pair and the first CD4, count of infected mothers on enrolment at PMTCT clinic. Dry blood spot samples were obtained from exposed infants for early infant diagnosis. Results were analyzed using the SPSS software. Results: The mean age of enrolled mothers was 31.3 ...

ABSTRACT Background: Current Leishman staining technique for staining thin blood films for differential leukocyte count is too time consuming to meet emergency needs in hospitalized patients with infectious and other deadly diseases. This study aimed at discovering optimal phenol: Leishman powder ratio appropriate for modified Leishman stain and finding an optimized staining reaction and facilitating rapid cellular analysis of blood without alteration in quantity and quality. Methodology: Leishman stain was modified using phenol crystals and liquefied phenol. Various ratios of phenol and Leishman powder were experimented in absolute methanol. Fixing and staining times of staining process were manipulated to develop new staining procedures that gave optimal staining reaction on thin blood films prepared within two hours of receipt. Results were presented as photomicrographs of stained slides. Results: 30mg and 50mg of phenol crystals or 30μL and 50μL of liquefied phenol were required to give 1:5 and 1:3 phenol: Leishman powder ratios respectively. Two modified Leishman staining techniques were developed. The first fixed thin blood films for 25 seconds and stained for 50 seconds while the second technique fixed slides for 1 minute and stained for 3 minutes. Photomicrographs of thin blood films showed excellent staining results that compared well with the conventional technique. Conclusion: Unlike the conventional method which requires a total of 10-12 minutes, to complete the staining process, modified Leishman staining techniques require only 75.0 seconds and 4.0 minutes! Batches of blood films can be stained within a short time thus facilitating rapid diagnosis and treatment of patients.

Background: Transfusion transmissible hepatitis (TTH) is a global health problem and the incriminating agents such as hepatitis B virus (HBV), hepatitis C virus (HCV) and hepatitis E virus (HEV) continue to pose serious threats to blood safety. The aim of this study was to determine the seroprevalence of HBV, HCV and HEV and relate the outcomes with blood donation type, age and gender and confirm any significant associations. Materials and Methods: In this cross-sectional study, Hepatitis B surface antigen (HBsAg) and antibody to HCV were determined with Diaspot and Lab Acon immunochromatographic ELISA-based test devices. Antibodies to HEV were first determined with Biopanda lateral flow device followed by ELISA assay for sero-reactive HEV immunoglobulins M and immunoglobulin G (IgM and IgG) antibodies. Results: A total of 370 prospective blood donors between 18 and 55 years old (mean 31.2 ± 7.6 years) who presented for blood donation at FETHI Blood Bank were screened. Overall male:...

Few clinical settings in resource-limited countries perform CD4+ T-lymphocyte counts required as a baseline test for antiretroviral therapy. We investigated CD4 count in newly diagnosed HIV-infected patients attending our treatment centre and evaluated suitability of total lymphocyte count (TLC) as a surrogate marker for CD4+T-lymphocyte count required as a yardstick for initiating antiretroviral therapy. Usefulness of TLC as a surrogate marker for CD4+T-lymphocyte counts <200, ≤350 and <500cells/µL for HIV-positive patients in our facility was evaluated by 180 pairs of TLC and CD4 counts from 180 newly diagnosed HIV-infected patients and results were compared by linear regression and Spearman’s correlation analytical tools.Approximately 72.8% of our patients were diagnosed late as revealed by CD4 count ≤350cells/µL. An overall good correlation was noted between TLC and CD4+T-cell counts (r=0.65, slope=0.69), mean total lymphocyte count of 1.04 ± 0.81, 1.39 ± 1.06 and 1.57 ± 1...

Anti‐HBc screening and nucleic acid testing for hepatitis B viral DNA (HBV DNA) detection in blood donors are not routinely performed in clinical settings in Nigeria. This raises serious concerns for safety of blood at a time that global health standards advocate for transfusion safety. The aim of this research is to investigate if presence of anti‐HBc in blood donors is actually associated with occult hepatitis B infection through basic and advanced procedures. Prospective blood donors who were seronegative for HBsAg but sero‐positive for anti‐HBc (with or without other markers) among the four hundred and seventy enrolled in a cross‐sectional study were selected for this study. Samples were further screened for hepatitis B core immunoglobulin M by enzyme‐linked immunosorbent assay. Nucleic acid testing was performed for confirmation of occult hepatitis B infection. Anti‐HBc was detected in 20 (32.8%) of the sixty‐one HBsAg antigen‐negative blood donors which constituted 13.0% of th...

Authors ’ contributions This work was carried out in collaboration between all authors. Author KAF designed the study, performed the statistical analysis, wrote the protocol, and wrote the first draft of the manuscript. Author GRAO was also involved in study design and assessment of the literature. Authors CTO and AAA managed the analyses of the study. Authors KAF and AJE managed the literature searches. All authors read and approved the final manuscript.

Few clinical settings in resource-limited countries perform CD4+ T-lymphocyte counts required as a baseline test for antiretroviral therapy. We investigated CD4 count in newly diagnosed HIV-infected patients attending our treatment centre and evaluated suitability of total lymphocyte count (TLC) as a surrogate marker for CD4+T-lymphocyte count required as a yardstick for initiating antiretroviral therapy. Usefulness of TLC as a surrogate marker for CD4+T-lymphocyte counts <200, ≤350 and <500cells/µL for HIV-positive patients in our facility was evaluated by 180 pairs of TLC and CD4 counts from 180 newly diagnosed HIV-infected patients and results were compared by linear regression and Spearman’s correlation analytical tools.Approximately 72.8% of our patients were diagnosed late as revealed by CD4 count ≤350cells/µL. An overall good correlation was noted between TLC and CD4+T-cell counts (r=0.65, slope=0.69), mean total lymphocyte count of 1.04 ± 0.81, 1.39 ± 1.06 and 1.57 ± 1...