Voluntary Blood Donors Research Articles

RESULTS OF IRON SUPPLEMENTATION FOR REGULAR VOLUNTARY NON-REMUNERATED BLOOD DONORS AT NATIONAL INSTITUTE OF HEMATOLOGY AND BLOOD TRANSFUSION

Objective: To evaluate the results of iron supplementation for RRVBD at the National Institute of Hematology and Blood Transfusion (NIHBT). Subjects and methods: Including 279 RRVBD with serum ferritin below 26 ng/ml taking iron tablets containing 35 mg of elemental iron. Methods: Cross-sectional description, prospective study. Results: The average age of RRVBD taking iron tablets is 27.8 years old, the average number of blood donations is 11 times, the average time of re-testing is 169.5 days. The proportion of RRVBD taking iron tablets and testing on time is 43.4%, the proportion of RRVBD not taking iron tablets or not taking enough iron tablets is 18.3%, the proportion of RRVBD taking enough iron tablets and not coming to the test on time is 18.6%. The proportion of RRVBD dropping out of the study is 19.7%. Hematological parameters (red blood cell count, hemoglobin (Hb), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean serum iron concentration) of RRVBD taking iron tablets are within the normal range, the serum ferritin concentration of RRVBD recovered after taking iron tablets is: in the group of blood donors taking enough iron tablets and testing on time, the mean serum ferritin concentration before taking iron tablets is 15.8 ± 5.5 ng/ml and after taking iron tablets is 24.7 ± 14.9 ng/ml, the proportion of blood donors with ferritin returning to normal range after taking iron tablets is 39.7%. In group of blood donors not taking iron tablets or not taking enough iron tablets, serum ferritin before iron intake is 18.1 ± 5.3 ng/ml and after iron intake is 14.2 ± 10.9 ng/ml, the proportion of blood donors having serum ferritin returning to normal range after iron intake is 7.8%. In group of RRVBD taking enough iron tablets and not coming to the test on time, the mean serum ferritin concentration before iron intake is 16.5 ± 5.9 ng/ml and after iron intake is 28.8 ± 17.1 ng/ml, the proportion of blood donors with serum ferritin concentration returning to normal range after blood donation is 51.9%. Conclusion: The proportion of regularly repeated voluntary blood donors taking enough iron tablets and testing on time is 43.4%, the proportion of regularly repeated voluntary blood donors not taking iron tablets or not taking enough iron tablets is 18.3%, the proportion of regularly repeated voluntary blood donors taking enough iron tablets and not coming to the test on time is 18.6%, the proportion of regularly repeated voluntary blood donors not taking iron tablets and not testing is 19.7%. Hematological parameters (red blood cell count, Hb, MCV, MCH and mean serum iron concentration) of regularly repeated voluntary blood donors taking iron tablets before and after iron intake are within the normal range. The proportion of blood donors with serum ferritin concentration after iron intake returning to the normal range: blood donors taking enough iron tablets and testing on time is 39.7%, blood donors not taking iron tablets or not taking enough iron tablets is 7.8% and blood donors taking enough iron tablets and not coming to the test on time is 51.9%.

Systematic Literature Review (SLR ), Peningkatan Pengetahuan Tentang Donor Darah.

The number of people donating blood in Indonesia is relatively low, with the number of regular donors at 250 thousand compared to the population in Indonesia which has 230-240 million people (Ministry of Health of the Republic of Indonesia, 2019), this shows that awareness of voluntary blood donation among the public is still low . The aim of this research is to conduct a literature review, namely to provide information about blood donation and provide understanding to the public about carrying out blood donation. The technique used is the Systematic Literature Review (SLR) strategy, which aims to identify, review and evaluate all relevant research so as to answer research questions at specified stages. The conclusion obtained from the results of this research is that this community service activity is able to increase knowledge about blood donation in the community

ANALYSIS OF CAUSES FOR PRE-DONATION DEFERRAL AMONG VOLUNTARY BLOOD DONORS AT A TERTIARY CARE HOSPITAL

Objectives: Pre-donation screening of potential blood donors is critical for ensuring the safety of the blood collected, and donor deferral as a result of risk factors is practiced worldwide. It is important to study the pattern of deferrals to reduce unnecessary deferrals and encourage continuous blood donation. The aim of the present study was to determine the rate and reasons for pre-donation donor deferral among voluntary blood donors. Methods: This was a single-center, retrospective cross-sectional study conducted by analyzing 3 years of data, from January 2020 to December 2022, over a period of 2 months (December 2022 and January 2023) retrieved from the donor deferral register. The data was entered in Microsoft Excel and analyzed using the Statistical Package for the Social Sciences software. Descriptive statistical measures were utilized to present the data. Results: Among 29,847 voluntary donors, 13.81% (4123/29,847) were deferred, of whom 84.2% (3472/4123) were males. The deferral rate among males was 12.19% (3472/28,480), while it was 47.62% (651/1367) in females. 53.04% of the deferred donors were in the age group of 18–30 years (2187/4123). 98.73% (4071/4123) of the deferrals were temporary. Hypothyroidism on treatment (42.30%, 22/52), uncontrolled diabetes on insulin (34.62%, 18/52), and epilepsy on treatment (11.54%, 6/52) were the common reasons for permanent deferral, while low hemoglobin (13.07%, 532/4,123), medications (11.67%, 475/4,071), and body piercing (9.85%, 406/4,123) were the most common reasons for temporary deferral. Low hemoglobin was the common reason for deferral among repeat donors (55.45%, 295/532) compared to first-time donors. Conclusion: The current findings suggest that it is important to increase awareness of voluntary, non-remunerated blood donation among young people and educate people about the common criteria for a healthy donor to minimize the loss of blood donors.

SEROPREVALENCE OF TRANSFUSION-TRANSMITTED INFECTIONS AMONG VOLUNTARY BLOOD DONORS AT A TERTIARY CARE HOSPITAL

Objectives: Blood transfusion is an effective treatment for saving millions of lives. However, transfusion-transmitted infections (TTIs) hamper blood safety. To prevent transmission of these diseases, screening for infections is an essential step for blood safety. Aim: The aim of this study was to assess the seroprevalence of TTI among healthy voluntary blood donors. Methods: This was a retrospective cross-sectional study at the Department of Immunohematology and Blood Transfusion, Tirunelveli Medical College and Hospital, Tirunelveli, for a period of 6 years from January 2017 to December 2022. Data of the blood donors screened were retrieved and analyzed with the aid of screening register and seropositive donor register over 2 months (December 2022 and January 2023). Results: Among 53522 donors, 0.44% were seropositive for TTI (0.44%, n=233/53522) in which 99.57% (n=232/233) were male donors. Prevalence was more in 18–25 age group (39.91%, n=93/233). Hepatitis B virus (HBV) was the most prevalent microbe (n=144/53522) (0.27%). The prevalence of HBV showed a decreasing trend, while the prevalence of syphilis showed an increasing trend. The prevalence of human immunodeficiency virus, hepatitis C virus and malaria was unchanged. Conclusion: Seroprevalence and changing trends of TTI among blood donors reveal the prevalence of infections in the general population which gives an idea of disease burden on society. Education about confidential unit exclusion and implementation can help reduce transmission risk and wastage.

Organizing Community Participation in Humanitarian Blood Donation Activities

Aim: To organize and to encourage community participation in humanitarian blood donation held by the Indonesian Red Cross in collaboration with local church.
 Discussion: The culture of voluntary blood donation must always be encourage, in order to guarantee timely access to safe blood and blood products and help save lives. Compliment and appreciation given to noble donation of voluntary donors who receive no remuneration but are always ready and available to donate blood to help save other lives most of whom they never meet. Using popular social media, action taken to promote, mobilize, and publish educational materials on voluntary blood donation campaigns as well as encourage local potential donor to donate voluntarily. This activity is also the implementation of the noble human values ​​of sharing, giving and caring
 Conclusion: Connecting all stakeholders helps to make the blood donation succesfull.

Knowledge, attitude, and practice among medical students in gaza strip towards voluntary blood donation: a cross-sectional study

BackgroundA major component of emergency medical care is blood. The Gaza Strip has faced repeated wars over the last few years, emphasizing the importance of blood donation even more. This study aims to assess medical students’ knowledge, attitudes, and practices regarding voluntary blood donation in Gaza (VBD).MethodsThis cross-sectional study used stratified sampling method to survey medical students at Gaza’s two medical schools, Al-Azhar and Islamic Universities, between March and April 2022. A 35-item self-administered questionnaire with four sections: demographics, knowledge, attitude, and practice, was used. The data were statistically analyzed using SPSS version 25.ResultsA total of 329 students were surveyed (response rate of 89.6%). The median age was 20 (IQR = 3). Males made up 44.7% of the sample. Overall, 54.7% were found to have good knowledge about VBD, 68.1% did not know the time-to-wait between each whole blood donation, and in terms of blood donation criteria, only 30.7%, 25.2% were aware of the appropriate age and weight for donating. Moreover, school was the source of most information (66.6%). Meanwhile, 73.3% of participants expressed a positive attitude toward VBD. Only (17,6%) did not show a willingness to donate blood regardless of their relationship with the recipient. The vast majority (83.3%) had never donated blood before, and 12.5% had no plans to do so in the future. The two most common reasons for this were the lack of opportunity and health issues (31.0%, 11.9%, respectively).ConclusionThe sampled medical students had a positive attitude toward VBD, but there were deficiencies in their knowledge of blood donation criteria, and most had not donated blood. Adequate awareness campaigns are required to increase awareness about this universally and locally important subject.

Barriers of blood donation practices during the pandemic- KAP study on voluntary blood donation during the COVID-19 pandemic among undergraduate students in Karnataka

Background: During COVID-19 outbreak there was a drastic reduction in voluntary blood donation and cancellation of blood camps. Students and youth constitute a huge pool of voluntary blood donors and can also educate others in the community. Aim was to assess voluntary blood donation practices and its barriers during the COVID-19 pandemic among undergraduate students in Karnataka and assess knowledge and attitude towards blood donation. Methods: This was a retrospective record analysis of a 2021 online survey data collected as part of a student’s educational research exercise. Records of knowledge, attitudes, and practices of blood donation among undergraduate students were retrieved and analyzed. Results: Of the records of 232 undergraduate students, 64.2% (149) and 62.1% (144) were medical students and females. None of the participants had complete knowledge and there was significant difference in the knowledge of medical and non-medical students regarding blood donation. Satisfactory attitude towards blood donating procedure was seen among 64.2% students. Blood donation had been done by 19% and 4.7% of participants before and during the pandemic, respectively with majority being males and slightly more by non-medical students. Willingness to donate blood in the future was seen among 94.4%. Conclusions: The results suggest the need for awareness campaigns to address misconceptions and improve knowledge and attitude towards blood donation; also, to increase the number of voluntary blood donations as there was a high willingness to donate blood in the future. This could also be translated to other epidemics or pandemics that may arise in the future.

Enhancing blood safety: the utility of NS-1 antigen capture ELISA for detecting acute dengue infections among blood donors during peak transmission periods and the potential to curtail dengue spread

Background: Dengue fever is a viral disease transmitted by mosquitoes and affects millions of people worldwide. It can also be transmitted through blood transfusions, particularly during peak transmission periods. Methods: This was a cross sectional study which was conducted over a two-month period (June 2022 to July 2022) at a tertiary hospital blood bank. A total of 180 nonrepetitive serum samples were collected from voluntary blood donors and analyzed using the dengue NS-1 Ag Microlisa ELISA kit. Results: Among the 180 samples two samples tested positive for the dengue virus NS-1 antigen using the NS-1 antigen capture ELISA, indicating a prevalence of acute dengue virus infection among blood donors during the peak transmission period of 1.2% (2/180). Conclusions: The use of NS-1 antigen testing was shown to be useful for dengue virus detection. Routine screening of blood donors for dengue virus is not universally implemented in many countries, partly due to the lack of sensitive and specific screening tests. However, the use of serological tests, such as ELISA for dengue antibodies or NS-1 antigen, can effectively detect dengue virus in blood donors. Interventions made during peak transmission periods can help in curtailing the spread of dengue infections.

구조방정식을 이용한 헌혈자의 헌혈기부권 선택 의향에 대한 영향 요인 분석

This study investigated factors influencing individuals' preference for Voluntary Non-Remunerated Blood Donation(VNRD) to promote its adoption. Motivational factors, social responsibility perception, and blood donation frequency were identified as determinants of VNRD choice. A survey involving 378 public officials and 1,646 individuals from the general public was analyzed using a structural equation model. The results showed that self-satisfaction, altruism, profit pursuit, and blood donation drive positively influenced the choice of VNRD. Moreover, heightened awareness of social responsibility among local governments was associated with increased VNRD preference. The study advocates active engagement with local governments through a local community-centric public-private partnership system to boost blood donation. Regarding the influence of the frequency of blood donation participation on the choice of VNRD, it was found that, in the case of public officials, the frequency of blood donation participation did not significantly impact the motivation for choosing VNRD.

Impact of Iron Supplementation in Anemic Voluntary First-Time Blood Donors-Results of a Pilot Trial in Ghana

Introduction : Blood transfusion is a major developmental challenge in sub-Saharan Africa due to chronic inadequacy and shortage of major blood products. In Ghana, deferral of potential blood donors has been identified as a significant challenge. Anemia, accounts for nearly half of ineligible blood donors. The estimated prevalence of anemia is 42.4% in women of reproductive age and 18.8% among peri-urban men ( Spring and Ghana Health service 2016). Thus, a high prevalence of anemia accounting for nearly half of voluntary blood donor deferrals, may contribute to the country's poor availability of safe blood for transfusion. No prior investigation had been carried out in Ghana on whether potential blood donors, deferred due to anemia, would consider donating blood after receiving counselling and appropriate treatment. This study tested the hypothesis that low-dose iron supplementation will increase hemoglobin levels sufficiently among anemic individuals to make them eligible to donate blood. Data from this trial informed the design of a larger randomized control type 1 pragmatic effectiveness implementation hybrid trial. Methods:This was a longitudinal two-arm parallel-group trial (participants aged 18 - 60 years). We compared the hemoglobin levels among those with anemia, iron deficiency (ID) or iron deficiency anemia (IDA) who received iron supplementation to donors without ID or IDA (Control group) in a non-inferiority design(NCT04949165). Anemia, IDA and ID were defined and determined using World Health Organization cut-off values (WHO, 2011). Potential blood donors with hemoglobin values less than 10 g/dl were excluded from the study. Participants in the iron supplementation arm were given low-dose iron (65 mg elemental iron) three times weekly for four months while the control arm received the standard nutritional counselling practice. In-person visits occurred at two, four and six months and included blood draws for full blood count, peripheral blood film smear, malaria rapid test and serum ferritin. The primary outcome was hemoglobin level after four months. A structured questionnaire assessed adherence, nutritional counselling and adverse events every two weeks via phone. Results: Two hundred and twenty-three first-time voluntary blood donors consented and passed pre-screening donation requirements (105 in iron supplementation arm vs. 118 in the control arm). The mean ages were similar between the iron supplementation and control groups (19.7±2.5 vs. 20.1±3.1 years). In both groups, there were more females than males (iron: 75.2%; control: 51.7%). At screening, 43.9% (98/223) had anemia while 3.1% (7/223) had ID. Of those who had anemia, 84.7% (83/98) had ferritin at least 15 g/l while 15.3% (15/98) had IDA. Among controls who donated blood at screening with an interim 1 visit, 42.6% (20/47) of females and 20.9% (9/43) of males were anemic. Only 23.4% (11/47) of females but no male was ID after one blood donation. Among participants assigned to iron supplementation who were anemic at screening, 31.7% (20/63) of females and 28.6% (6/21) of males were no longer anemic at interim visit 1. Among iron participants who were ID at screening 53.3% (8/15) of females and no male (0/2) were iron replete at interim visit 1. Only half of the participants receiving iron supplementation self-reported perfect adherence at the first and second interim visits (end of iron supplementation). A small proportion of participants reported side effects of dark stools and abdominal pain. We did not observe bacterial infections or increased malaria incidence. The mean hemoglobin values decreased over time from baseline to month four in the control group (screening: N=118, 13.4±1.3 g/dl; interim visit 2: N=74, 12.3±1.5 g/dl) and increased in the iron supplementation group (screening: N=105, 11.3±0.9 g/dl; interim visit 2: N=56, 11.4±1.3 g/dl). However, the primary comparison, mean hemoglobin difference between the iron supplementation and control arm at four months, did not meet the threshold to reject the inferiority hypothesis. Conclusion: The prevalence of ID and IDA among voluntary first-time blood donors was lower than previously published estimates. Adherence to low-dose iron supplementation three times a week was poor. Hemoglobin levels in the iron supplementation arm were not close enough to those in the control group after four months of iron supplementation to declare non-inferiority.

Study on Blood Donation Willingness and Influencing Factors of College Students in a Medical College

Objective The study is to explore the willingness of medical college students to donate blood and its influencing factors, to provide scientific basis for improving the rate of unpaid blood donation. Methods The electronic questionnaire was distributed by random sampling, and its influence on blood donation willingness was investigated from four aspects: external promoting factors, internal promoting factors, external hindering factors and internal hindering factors. The differences and influencing factors among college students with different willingness to donate blood were analyzed. Results A total of 1047 valid questionnaires were collected. There were more male volunteers with blood donation willingness than girls (67.6% vs 61.5% P < 0.05), and there were differences among lower, middle and higher grades (68.1%, 66.2% and 58.8%). Willing college students whose family members had more blood donation experience than those with no blood donation desire (55.0% vs 72.7% P < 0.01). Positive factors of willingness to donate blood include family members who have the experience of blood donation, thinking that blood donation is pleasant, thinking that blood donation is the duty and responsibility of citizens, the support of family and friends. Negative factors of willingness to donate blood are grade and fear of pain during blood donation (P < 0.05). Conclusion According to the characteristics and needs of college students, we should carry out voluntary blood donation education, promote college students to actively participate in unpaid blood donation, and promote the sustainable and healthy development of unpaid blood donation career.

Screening and donor awareness of hepatitis B, hepatitis C, and HIV in Khyber Pakhtunkhwa

Globally, blood donations carry the risk of transmitting infectious diseases if not properly screened, necessitating rigorous protocols to detect transfusion-transmitted infections such as hepatitis B virus (HBV), hepatitis C virus (HCV), and HIV. Our study focused on assessing the frequencies of HBV, HCV, and HIV, as well as donor awareness of these infections in Khyber Pakhtunkhwa, Pakistan. This observational study, which was conducted over two months at Nowshera Medical College, involved 100 volunteer blood donors and used a close-ended questionnaire to gather data on both diagnostic results and awareness. The results indicated that HBV was present in 4% of the donors, HCV was present in 2%, and no HIV was detected. Awareness levels varied, with 52% of donors aware of HBV transmission through blood transfusions, 54% recognizing the lack of a vaccine for HCV, and 74% having a greater awareness of HIV affecting the immune system. This study highlights significant gaps in donor knowledge, especially regarding transmission and prevention. These findings underscore the need for enhanced screening and donor education to reduce the risk of infections from blood transfusions. Improved public health strategies and policies are necessary to ensure the safety of the blood supply, ultimately improving health outcomes in the region. This study advocates for targeted interventions that can significantly mitigate transfusion-related risks and foster a safer blood donation environment.

Seroprevalence of COVID-19 among voluntary blood donors.

COVID-19 usually presents with mild symptoms. No cases of transfusion - transmission of COVID-19 had been reported. Assessing the prevalence of viral infections among blood donors is essential to frame blood safety strategies. The main aim of this study is to assess the seroprevalence of SARS-CoV-2 antibodies among healthy and asymptomatic voluntary blood donors by enzyme-linked immunosorbent assay (ELISA). This cross-sectional study was conducted among voluntary blood donors using a consecutive sampling technique in the Department of Transfusion Medicine, the Tamil Nadu Dr. M.G.R. Medical University, Guindy, Chennai, for 18 months. Adhering to COVID-19 pandemic guidelines and donor eligibility criteria, blood samples collected from 500 asymptomatic unvaccinated voluntary blood donors were tested for SARS-CoV-2 (IgG + IgM + IgA and IgG) antibodies by ELISA. Adding IgA to a conventional IgM and IgG serological test improves sensitivity. The collected donor data were analyzed with IBM SPSS Statistics software. Pearson's Chi-square test and Fisher's exact test were used. P = 0.05 was considered statistically significant. IgG seropositivity among the donors was 58.8%, and IgM + IgA seropositivity was 29.6%. There was no statistically significant difference in the COVID-19 IgG/IgM + IgA seropositivity status with age, gender, blood group, occupation, or socioeconomic status. The IgG and IgM/IgA/IgG ELISA kits showed a difference of 13 cases which could be attributed to the higher sensitivity of IgG alone ELISA kit. This increased the seroprevalence by 3%. The majority of donors were either IgG or IgM and IgA positive, despite remaining asymptomatic. The seropositivity rate coincided with the COVID-19 surge among population.

Patient Blood Management and Its Role in Supporting Blood Supply.

Blood donors and voluntary blood donations are essential for ensuring the blood supply that can be maintained by good patient blood management (PBM) practices. This review article explores the role of blood donation in PBM and highlights the importance of donor screening and selection processes in different regions worldwide. The donor health questionnaires and the focused physical examination guidelines have changed in the last decade to increase donor and recipient safety. This article also discusses the status of transfusion practices, including the challenges of ensuring a safe blood supply. Significant among these are the effects of the COVID-19 pandemic on the blood supply chain and the impact of an aging donor population, especially. Promoting autologous donations and other blood conservation strategies are suggested to mitigate these issues. The role of replacement donors and the upper age limit for voluntary blood donation may be decided based on the demography and donor pool. The involvement of C-suite executives is also critical in implementing and running a successful PBM program. The review highlights how these different aspects of blood donation are integral to a successful PBM program and the safety of patients who receive blood transfusions.

The Prevalence of Blood Borne Diseases in Blood Donors of Peshawar, Khyber Pakhtunkhwa, Pakistan.

The goal of the study was to investigate the burden of transfusion- transmitted infections (TTIs) hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency virus (HIV), syphilis, and malarial parasite (MP) in ABO Blood Groups and Rh Type System among voluntarily blood donors in Khyber Pakhtunkhwa (KPK), Pakistan. It is a retrospective single center cross sectional study. This study was conducted from June 2020 to September 2021 (16 months) at the frontier foundation thalassemia center Peshawar KPK. Donors were physically healthy and fit for donation. Donors with physical disabilities and/or having co-morbid conditions were excluded from the report. All the samples were screened for anti-HIV, anti-HCV, HBsAg, Syphilis, and Malarial Parasite via ELISA kit and Immune Chromatographic Technique (ICT), respectively. A total of 6311 blood donations were evaluated. The majority of the donations (92%) were from (VNRBD) voluntary non-remunerated blood donation, while only 8% came from replacement donors. Amongst 6311 blood donations, 1.50 % (n = 95) were infected at least with one pathogen, HBV positive cases were 0.855 % (n = 54), HCV positive cases were 0.316% (n = 20), syphilis positive were 0.30% (n = 19) and MP positive cases were only 0.031% (n = 2). HBV, HCV, syphilis and malaria infections rates were found to be low as compared to the previous data published, while no case was reported for HIV. The study also revealed the distribution pattern of the aforementioned pathogens in blood groups and the Rh type system of the reactive samples. The lower reported in our study indicates the awareness among the people of Peshawar about TTIs and their precautions. The prevalence rate that we are reporting is less than previously published articles in the same domain.

Seroprevalence of viral transfusion transmissible infections (HBsAg, anti-HCV, anti-HIV, Syphilis) and coinfection among healthy volunteer blood donors during 5-years in Luanda, Angola

BackgroundThe transmission of diseases by blood products continues to be a worldwide health problem, especially in Africa. Seroprevalence rates of the Hepatitis B virus (HBV), Hepatitis C virus (HCV), Human Immunodeficiency Virus (HIV), Syphilis, and Coinfection in Angola are poorly documented. This study aims to identify the seroprevalence of markers with positive results for Hepatitis B, C, HIV, Syphilis, and Coinfection in blood donors. Material and methodsA retrospective study was conducted using a database of positive serological markers for these infections and coinfection in 2734 blood donors traced from 2011 to 2016 in Luanda, Angola. The Chi-Square test (χ2) or Fisher's exact test was used to evaluate serological positivity and donors’ characteristics. A p-value < 0.05 was considered statistically significant. Results2734 blood donors aged 18 to 64 (median age 32 ± 9) were screened from 2011 to 2016. 73.9 % of the donors were positive for one Transfusion-Transmitted Infection (TTI), and 5.9 % showed evidence of multiple infections. The overall seroprevalence rate was 50.2 % (1373) for HBV, 20 % (436) for Syphilis, 7 % (191) for HIV, 5.1 % (140) for HCV, and 5.8 % for coinfected donors. 2467 (90 %) were men, and 267 (10 %) were women. We identified 118 (5.8 %) coinfected donors. Of those, 40 (33.9 %) simultaneously presented Hepatitis B virus surface antigen (HBsAg)/Syphilis, 24 (20.3 %) HBsAg/HIV, 22 (18.6 %) HBsAg/HCV, 20 (16.9 %) HIV/Syphilis, 8 (6.8 %) HCV/Syphilis, and 4 (3.4 %) HIV/HCV. ConclusionA high transfusion-transmissible infection prevalence was found compared to some countries in Sub-Saharan Africa. Therefore, intensifying the screening for these transfusion-transmitted infections in blood donors is critical to ensure blood safety.

Distribution of ABO and Rh (D) Blood Groups and their Genotypes in Amran Governorate, Yemen

Background: The ABO and Rh blood group system is essential for blood bank inventory, blood transfusion services, and organ transplants. Relatively very little data is available about ABO and Rh (D) blood groups distributions in the Amran governorate. Therefore, this study aimed to determine the distribution of ABO and Rh (D) blood group and their genotypes in the Amran governorate, Yemen. Methods: A cross-sectional prospective and retrospective study was carried out from January 2020 to December 2021, on 1949 volunteer blood donors; 414 medical students were obtained from Amran University and 1535 from clinical records in the blood bank of Maternity and childhood hospital at Amran Governorate. The ABO and RhD grouping was done by using commercially available monoclonal antibodies (anti-A, anti-B, and anti-D) by slide methods. The allele and genotype frequency of the donors was determined by the Hardy-Weinberg equilibrium assumption. Descriptive statistics were analyzed using the SPSS program. The difference between the observed and expected frequency was tested by an online Chi-square calculator. A P-value of &lt;0.05 was considered statistically significant. Results: Out of 1949 participants; were 78.8% of hospital donors, 92.2% of males, and 63.5% of rural areas. Blood group O was the most prevalent (51.2%), followed by A (31.5%), B (13.9%), and AB (3.5%) with statistically significant differences (P= 0.002). The Rh (D) positive was present in 86.8% of participants and 13.2% were Rh (D) negative. Moreover, the allele frequencies were in the order of (IO &gt; IA &gt; IB &gt; AB), where (IO i = 0.513, IA = 0.313, IB = 0.138, and AB= 0.035). While the Rh(D) and d allelic frequencies were 0.868 and 0.132, respectively. Also, there was no statistically significant difference between observed and expected allele and genotype frequency (P-value &gt;0.05). Conclusion: The frequency of distribution of ABO and Rh (D) blood group and their genotypes among the study population was found to be similar to those reported from most Asian populations. This crucial information may be helpful in planning for future health challenges, particularly planning with regard to blood transfusion services.

Prevalence of red blood cell alloantibodies among blood donors in the French Military Blood Institute: A 10-year retrospective study.

Screening for red blood cell alloantibodies (RBC-Ab) is a critical step in ensuring blood transfusion safety performed by blood donation screening laboratories. We aim to evaluate the prevalence of the RBC-Ab among healthy blood donors. Antibody screening of serum of all voluntary blood donors was performed as a routine immune-haematological procedure by a solid-phase method on a fully automated immunohaematology analyser. Positive sera were further investigated to identify the specificity of RBC-Ab by a commercially available red cell panel. Between January 2012 and December 2021, a total of 212,218 donations were screened for the presence of RBC-Ab, 74% from male donors (n = 157,898) and 26% from female donors (n = 54,320). Mean age at donation time was 32 ± 12 years. A total of 1007 donations were screened positive (0.47%), and 131 were confirmed positive for alloantibodies in their serum, yielding a prevalence of 0.06% (95% confidence interval: 0.05-0.07). Most frequent alloantibodies identified were of RH blood group system (64%), followed by anti-MNS (19%), anti-Kidd and Lewis (6% each) and anti-KEL (4%). The results showed a statistically higher prevalence of alloantibodies in women than men. Our results showed a lower prevalence as compared to the available data, which might be related to our study population. The prevalence of positive antibody screening in healthy donors in this study was found to be 0.47%, while the prevalence of alloantibodies was 0.06%. The most common alloantibodies were anti-RH1 (25%) and anti-RH3 (24%).

Degree of blood safety of voluntary non-remunerated versus replacement blood donations: A multi-centre study of the large cohort of blood donors from two provinces of Pakistan.

Voluntary non-remunerated blood donors (VNRBDs) are recognized as being crucial for the safety and sustainability of national blood supplies. Systems based on replacement donors (RDs) pose high risks of transfusion transmissible infections (TTIs). Currently, only 10%-13% of blood donations are voluntary in Pakistan. No large-scale studies have been conducted to objectively evaluate the impact of the mode of donation on the frequency of TTIs, a gap this study aimed to fill. The study was conducted at the Indus Hospital, Karachi. Data from a total of 591,820 blood donations were included from 1 October 2017 to 30 May 2021 and evaluated for type of donations and results of TTI testing, primarily performed on Architect i2000SR (Abbott). The TTIs tested include hepatitis B virus, hepatitis C virus, human immunodeficiency virus, syphilis and malaria. A total of 477,938 (80.7%) RDs and 113,882 (19.3%) VNRBDs were screened. Among these, 53,590 (9.06%) were positive for TTIs. There were 10.2% positive RDs (10.08-10.25 95% confidence interval [CI]) while 4.4% in VNRBDs (4.29-4.53 95% CI). Co-infections were observed in 2367 (0.4%) RDs, while 159 (0.02%) in VNRBDs. Geographically, the highest frequency of TTIs was observed in semi-urban areas of Sindh (11.2%) and Punjab (9.6%). A site-wise comparison of TTIs in RD versus VNRBD showed significant differences (p-value 0.00). RDs are associated with higher frequencies of TTIs, compared with VNRBD. However, the study was unable to assess whether the significant difference was related to individual risk or repeat/first time status of the donors. Other important variables affecting frequency are the catchment area of the blood donors in Pakistan. Urban areas have less prevalence than semi-urban areas.

Prevalence and incidence of transfusion-transmissible infections among blood donors in Malawi: A population-level study.

Voluntary non-remunerated blood donors (VNRBDs) are essential to sustain national blood supplies. Expanding testing capacity for the major transfusion-transmitted infections (TTI) is crucial to ensure safe blood products. Understanding trends in TTIs can inform prioritisation of resources. We conducted a retrospective cohort data analysis of routine blood donation data collected from VNRBDs by the Malawi Blood Transfusion Service from January 2015 to October 2021. Variables included age, occupation; and screening results of TTIs (HIV, Hepatitis B and C, and syphilis). We estimated both prevalence and incidence per person-year for each TTI using longitudinal and spatial logistic regression models. Of the 213 626 donors, 204 920 (95.8%) donors were included in the final analysis. Most donors (77.4%) were males, baseline median age was 19.9 (IQR 18.0, 24.1), 70.9% were students, and over 80.0% were single at first donation. Overall TTI prevalence among donors was 10.7%, with HBV having the highest prevalence (3.4%), followed by syphilis (3.3%), then HIV (2.4%) and HCV (2.4%). Incidence per 1000 person-years for syphilis was 20.1 (19.0, 21.3), HCV was 18.4 (17.3, 19.5), HBV was 13.7 (12.8, 14.7), and HIV was 11.4 (10.6, 12.3). We noted geographical variations with the northern region having lower rates of both prevalence and incidence compared to central and southern regions. The individual TTI prevalence and incidence rates from this study are consistent with Southern African regional estimates. By identifying geographical variations of TTI prevalence and incidence, these findings could potentially inform prioritisation of blood collection efforts to optimise blood collection processes.