Predonation Screening Research Articles

Carrier frequency and molecular basis of hemoglobinopathies among blood donors in eastern Morocco: Implications for blood donation and genetic diagnosis

BackgroundHemoglobinopathies represent the most commonly inherited autosomal recessive blood disorders in the world. The aim of this study was to determine the carrier frequency and molecular basis of hemoglobinopathies among blood donors in eastern Morocco. This is the first study of its kind for this country. MethodsHealthy blood donors of the BRO Biobank were included in this study. Blood samples were analyzed using an automatic blood cell analyzer for complete blood counts. Hemoglobin fractions were analyzed by capillary electrophoresis and serum ferritin was measured on a chemical and immunological analyzer. Suspected hemoglobinopathy carriers were further characterized by Sanger sequencing, Gap PCR and PCR-RFLP. ResultsThe study involved 2013 blood donors, of whom 1063 were male and 950 were female (sex ratio male-to-female of 1.1). The median age of these donors was 35 years. The overall carrier frequency of hemoglobinopathies was 1.84 %, with β-thalassemia carriers being the most prevalent (0.65 %) followed by HbAC (0.55 %), α-thalassemia carriers (0.30 %), HbAS (0.1 %), HbAG-Philadelphia (0.1 %), HbAD-Ouled Rabah (0.05 %) and HbAO-Arab (0.05 %). Additionally, novel β-thalassemia variants (C6(−G) and −83(A > G)) and a structural variant (Hb D-Ouled Rabah) were discovered for the first time in Morocco. ConclusionsThis study provided the first report on carrier frequency and molecular basis of hemoglobinopathies among healthy donors in Morocco. These findings are valuable for the implementation of carrier screening and genetic diagnosis for hemoglobinopathies. Furthermore, these results justify the need to introduce pre-donation screening for hemoglobinopathy carriers in Morocco, particularly in areas with a high prevalence of carriers to enhance the overall quality of the national blood supply.

Higher rates of laboratory-confirmed cases of syphilis in Western Canadian blood donors compared with Eastern Canadian blood donors following a period of societal re-opening.

There is a growing infectious syphilis outbreak in Western Canada. Although blood donors are screened for syphilis risks, some blood donors will still be confirmed test-positive for syphilis. This study compares the characteristics of confirmed test-positive syphilis donations in both Western Canada and Eastern Canada, November 2022-August 2023. Donors were defined as Western or Eastern Canadian. Blood donations were tested for syphilis using the PK-TP assay (Beckman Coulter PK7300 Automated Microplate System). Confirmatory Treponema pallidum particle agglutination (TPPA) and rapid plasma reagin (RPR) assays were performed by one of two reference laboratories. An RPR titre ≥1:8 was used as a proxy for possible infectious syphilis. Rates of laboratory-confirmed syphilis were higher in Western (n = 43, 13.4/100,000 donations) versus Eastern donors (n = 19, 4.7/100,000 donations; Fisher's exact test, two-sided, p ≤ 0.0001). Most syphilis confirmations were in first-time donors (Western Canada n = 31/43, 72.1%, Eastern Canada 12/19, 63.2%). Although rates of laboratory-confirmed syphilis were higher in Western versus Eastern donors, Western donors did not have higher rates of infectious syphilis. Further studies might assess whether donors with laboratory-confirmed syphilis understood pre-donation screening questions or were completely unaware of a past infection.

Comparative analysis of alloimmunization in healthy voluntary blood donors versus general patients: A 6-year experience from regional transfusion center in Northwestern part of India

Abstract BACKGROUND: Alloimmunization is a significant complication of blood transfusion and can lead to hemolytic transfusion reactions. The prevalence of alloimmunization in healthy voluntary blood donors and patients in the northwestern part of India is not well documented. AIM AND OBJECTIVE: This study aims to investigate the prevalence, specificity, and clinical significance of antibodies in blood donors and general patients in a regional transfusion centre in the North Western part of India. MATERIAL AND METHODS: This study aimed to investigate the prevalence of alloimmunization in voluntary blood donors and patients over a six-year period in a regional transfusion center. A total of 145,299 donor samples and 58,009 patient samples were screened for unexpected antibodies using standard techniques. RESULTS: Of the 145,299 donor samples screened, only 16 (0.011%) were positive for unexpected antibodies, with anti-M being the most common (62.5%). In contrast, among the 58,009 patients screened, 275 (0.47%) were found to be positive for alloantibodies, with blood group B showing the highest prevalence. The most common alloantibodies found in patients were anti-D, anti-E, anti-c, and anti-K in the Rh and Kell blood group systems. CONCLUSION: The incidence of alloimmunization in voluntary blood donors is low and comparable to other regions, which can be attributed to strict donor selection criteria and pre-donation screening practices. However, the incidence of alloimmunization in patients is higher, highlighting the need for routine screening for unexpected antibodies in patients to prevent hemolytic transfusion reactions. Further studies are needed to explore the underlying factors contributing to the higher incidence of alloimmunization in patients.

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.

The impact of pre-donation viral markers screening of new blood donors on blood safety.

The risk of transfusion-transmissible infections (TTIs) remains a concern in transfusion medicine. Since the rate of infection among first-time blood donors is higher than repeated donors, strategies to enhance blood safety can focus on new donors. The aim of the study was to investigate the effect of pre-donation viral screening of new donors on blood safety. The pre-donation screening of new donors was implemented in the Kurdistan blood center. In this program, new donors who met the blood donation criteria were informed about the program and only a blood sample was donated for HBs Ag, HCV Ab, and HIV Ab testing. New donors with negative results were invited to donate blood after 12weeks. A unit of blood was collected from eligible returned donors. Laboratory tests were performed again using the same methods. Finally, the prevalence of confirmed positive TTI results among donated blood in Kurdistan blood center was compared before and after the establishment of program. During the study, 4,434 new donors were screened for viral markers. A total of 41 new donors (0.92%, 95% CI, 0.007-0.13) had repeatedly reactive results and infection was confirmed in blood sample of 24 donors (0.54%, 95% CI, 0.003-0.008). Overall, 56% of new donors returned for blood donation. Prevalence of confirmed TTIs markers in collected blood units was 0.27% and 0 before and after implementing program, respectively. This study indicated that Pre-donation screening can reduce the risk of TTI transmission by identifying infected donors at the pre-donation phase.

Epidemiological characteristics and risk factors of syphilis among blood donors in Huzhou.

To investigate the epidemiological characteristics and risk factors for syphilis in Huzhou City, and to provide data to support the design of more effective health counselling and screening measures for blood donors. A retrospective study was conducted to analyse the demographic characteristics and seropositivity of syphilis among blood donors from 2019 to 2021. The differences in the serological status of syphilis among different populations under different demographic factors were compared, and conditional logistic regression analysis was used to identify the risk factors for syphilis. The seropositivity rate of syphilis among blood donors in Huzhou City was 133/100,000, which decreased year by year. There were significant differences in the syphilis seropositivity rate among different groups in terms of age, education level, occupation, household registration, marital status and blood donation history (P<0.05). The multivariate logistic regression model showed that all six factors, including age, education level, occupation, household registration, marital status and blood donation history, had significant effects on syphilis infection (P<0.01), with OR values and 95% CIs of 2. 387 (1.381-4.127), 3.607 (1.609-8.086), 2.784 (1.657-4.679), 5.074 (1.865-13.804), 11.177 (3.481-35.888), and 11.244 (3.940-32.091), respectively. There is room for improvement in pre-donation health counselling and screening of high-risk populations. Timely monitoring and updating of demographic data for specific high-risk populations is essential.

Impact of Universal Donor History Questionnaire in Pre-Donation Deferrals a Tertiary Care Hospital Experience

Objective: The purpose of this research was to better understand the factors that lead to pre-donation deferral at a tertiary care hospital's Blood bank. Understanding the factors that lead donors to decline can inform more effective selection criteria. Study Design: Cross-sectional/Descriptive study Place and Duration: Diagnostic and research laboratory Liaquat university of Medical and Health Sciences Jamshoro Hyderabad. January 2022-December 2022 Methods: This study comprised of 2200 donors at blood bank of LUMHS. The UDHQ included 25 questions to assess donors' backgrounds in regards to things like injections, medicines, time since last donation, tattoos, general health, dental work, sexual relationships, malaria/T.B., surgery, jaundice, vaccination, positive viral markers, etc. Haemoglobin (Hemacue 50/Diaspect Hb with daily quality control), Heart rate/rhythm, Blood pressure, Body temperature, Weight/Height, and Jaundice were all part of the physical exam. Results: There were majority 1578 (71.7%) males and 622 (28.3%) female donors among all cases. Donors mean age was 26.12±9.88 years and mean weight was 61.3±8.49 kg. 1435 (65.2%) cases were from urban areas. Among all, 1650 (75%) donors were accepted and 550 (25%) donors were deferral. Most common cause of deferral was low hemoglobin followed by anemia, HCV, HBV, inappropriate pulse rate, low BP, jaundice, active infection, malaria, syphilis, allergy, aspirin intake, drugs, last donation, skin/eye colour and sexual relationship. There were 1870 (85%) cases of replacement donors among all cases. Conclusion: The selection of healthy blood and the reduction of donor injury will be made possible by a thorough pre-donation screening interview and physical examination. Our setup has a somewhat higher blood donor deferral rate because to stringent donor sector requirements and extra attention paid to donor selection processes. The increased replacement donor deferral rate is a result of refusals for past injection history and poor hemoglobin levels. Keywords: Donors, Deferrals, Hemoglobin, Infection, HCV

Successful living donor liver transplantation from an HIV and HCV positive donor: report from the first case in the world.

HIV (human-immunodeficiency-virus) and HCV (hepatitis-C-virus) infections cause millions of deaths across the world every year. Since the introduction of effective therapies for HIV, in the middle of 1990 s, and HCV, after 2013, those two untreatable infections became completely controlled. Donor safety is the main goal in living donor liver transplantation (LDLT). An accurate pre-donation screening is mandatory for excluding risk factors related with any increase of donors' short-term and long-term morbidity. We present the first LDLT from a donor with both HIV and HCV previous infections. Donor and recipient did not experience any complication. Individuals with well controlled HIV/HCV infections and without any risk factors may be suitable for donation of a part of their healthy liver. An infographic is available for this article at:http://links.lww.com/QAD/C833.

Horiba Micros ES 60 Blood Cell Analyzer in Blood Donor Eligibility: A Validation Study.

Eligibility criteria for blood donation require hemoglobin levels of ≥12.5 g/dL for women and ≥13.5 g/dL for men, and a platelet count of ≥180 × 109/L. Screening methods before donation should ensure high accuracy, precision, and ease in operation. We assessed the performance, precision, and repeatability of the Horiba Micros ES 60 (Horiba) compared to the Beckman Coulter DXH 800. Performance was compared by testing samples for each of the 11 devices across 6 sites in the Transfusion Service of Friuli Venezia Giulia Region, Italy. We measured precision by calculating the coefficient of variation (CV), concordance with ρ-Pearson's correlation coefficient, and accuracy with F-tests. The intra-assay agreement was examined in the 11 devices, and repeatability was performed by using CV and the Kruskal-Wallis test. The precision of Horiba was acceptable. Overall, ρ-Pearson's coefficients indicated a strong correlation and positive relationship between all variables. The Bland-Altman plots showed that most of the differences lay within the limits of agreement. All CV were below the reference threshold for all the parameters. Finally, the Kruskal-Wallis test reported non-significant statistical differences for all parameters, except platelet count (p &lt; 0.000). Horiba is adequate for routine pre-donation screening. The intra-assay agreement further demonstrates the accuracy of the device.

Residual risk of hepatitis B virus transmission through blood donations in Burkina Faso screened with rapid diagnostic tests.

Background and Aimshepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV) represent the major transfusion–transmissible pathogens worldwide. The risk of transmission is relatively high in African countries, mainly due to unreliable screening methods of blood donations. In Burkina Faso, predonation screening using rapid diagnostic tests (RDTs) is widespread, raising the major question of the transfusion safety in the country. The objective of this study was to assess the risk of transmission of HBV, HCV, and HIV through blood transfusion in the context of the use of RDTs for screening of the blood donations.MethodsIn this cross‐sectional study, a total of 417 serum samples obtained from blood donors tested negative for HBsAg, anti‐HCV, and anti‐HIV using RDTs were retested for the same markers using chemiluminescent immunologic assays. Total antibodies to HBV core (anti‐HBc) were tested on randomly selected samples. HBV‐DNA and HCV‐RNA viral loads (VLs) were quantified on HBsAg and anti‐HCV positive samples, respectively. To assess possible occult hepatitis B infection (OBI), HBV‐DNA‐VL was quantified on 313 randomly selected HBsAg‐negative samples.ResultsHBsAg and anti‐HCV were found respectively in 6 (6/417; 1.4%) and 11 (11/417; 2.6%) samples. No samples were reactive for anti‐HIV. Total anti‐HBc were detected in 217 out of the 319 randomly selected samples (217/319; 68.02%). HBV‐DNA was detected in four (4/313; 1.27%) samples, including two (2/6; 33.33%) of the six HBsAg positive samples and two (2/313; 0.6%) of the HBsAg‐negative samples, suggesting two cases of occult HBV infection. All anti‐HCV antibody‐positive samples were HCV‐RNA negative.ConclusionThis study shows that RDTs are not sufficiently sensitive for the screening of blood donations. Our results highlight the urgent need to think about the extension of sensitive immunological tests in all blood transfusion centers and also the implementation of nucleic acid amplification techniques.

Donor Notification and Response Rate in a Stand-alone Blood Center in Western India

Background and Objectives: Counseling and notification of reactive blood donors play an important part in maintaining the chain of safe blood. The process of notification involves informing donors about the status of their reactivity against five major and mandatory transfusion-transmitted infections (TTIs). Such notification and timely follow-up till the donor reaches the referred place help in reducing the burden of TTI in society, thereby improving blood safety. The aim of this study is to highlight the importance of prompt donor notification, referral, and follow-up. Materials and Methods: This was a retrospective cross-sectional study carried out at a stand-alone blood center from January 2019 to October 2021. A total of 36,162 donations were screened for the five mandatory TTIs-HIV (I and II), hepatitis C virus (HCV), hepatitis B virus (HBV), syphilis, and malaria. All reactive results were retested with a duplicate tube sample and a bag sample to confirm the reactivity. Donors were notified regarding the serostatus by phone and called for reporting at our blood center, and referred to Integrated Testing &amp; Counseling Centre (ICTC) or any other referral center. Results: A total of 212 (0.58%) out of 36162 donors were tested reactive during the study period. Out of them, 40.56% (n = 86) were hepatitis B virus reactive, 21.7% (n = 46) were HIV (I and II) reactive, 20.7% (n = 44) were HCV reactive, and remaining 17.1% (n = 36) were syphilis reactive. All the donors were informed. Out of them, 71.69% (n = 152) responded to the communication and 52.83% (n = 112) personally visited the blood center or respective ICTC for further evaluation. Conclusion: Even after laying strict criteria for predonation screening and counseling, few donors do conceal their high-risk behavior or even their serostatus and continue to donate blood, leading to the wastage of resources. Thorough follow-up of seroreactive donors helps in improving blood safety and also improves their quality of life by the commencement of timely treatment.

Is high hemoglobin a hindrance factor for blood donation? A pilot observational study from the coastal region of India.

Blood donors with high Hb are often deferred for the presumed risk of polycythemia vera (PV). However, adequate data to substantiate or refute this hypothesis is lacking. We conducted an observational study on blood donors found to have high hemoglobin (Hb≥18g/dL) during the pre-donation screening process using a portable hemoglobinometer at our blood center for four months. We adopted a cost effective methodology wherein a questionnaire was used to elicit the secondary causative factors of high hemoglobin and a complete blood count test to observe the blood cell parameters and JAK2V617F mutation test was performed in a subset of donors lacking secondary erythrocytosis (SE) history. Of the total 7076 donors enrolled, 112 male donors (1.58%) had high hemoglobin. The majority (70.4%) were repeat donors with mean age of 31.4 years. About 61% of the donors had attributable factors for SE like smoking, occupational exposure to carbon monoxide. The mean hemoglobin value of capillary and venous hemoglobin demonstrated a statistically significant difference (P<0.05) where 2.7% of donors had venous Hb<18g/dL. The hematological profile of all the donors showed increased RBC but normal platelet and WBC count. Of 24 donors included for the JAK2V617F test, none had a positive report. This study suggests high hemoglobin in blood donors is less likely due to PV. Hence, re-considering their deferral may help alleviate donor anxiety and allow donor return. However, multi-centric studies are required to develop consensus statements on PV risk status and blood donation eligibility.

Reported non-compliance with pre-donation screening among blood donors in Québec, Canada: A focus on the 3-month deferral for men who have sex with men.

In Québec (Canada), the donation deferral for men who have sex with men (MSM) has recently been shortened to 3 months. Whether this change impacted compliance with pre-donation screening is unknown. We assessed compliance with the disclosure of male-to-male sex and other behavioural risk factors for HIV amid this change. Québec residents who donated from 14 July 2020 to 30 November 2020 were invited to participate in an online survey. Donors were informed that the survey was optional and anonymous. Survey questions were those used for routine pre-donation screening. Rates of reported non-compliance were weighted based on several characteristics. Of 21,918 contacted donors, 7113 (32.45%) participated. Among male participants (N=3347), six (0.27% [95% confidence interval (CI)=0.09%-0.44%]) were not compliant with a 3-month MSM deferral. Among female participants (N=3766), two (0.06% [95% CI=0.00%-0.13%]) were not compliant with a 3-month deferral for sex with a man who had male-to-male sex ≤12 months. Other risk factors exhibited similar or lower rates of reported non-compliance. Reported non-compliance with a 3-month MSM deferral and the disclosure of other HIV behavioural risk factors was low. These results warrant the investigation of behavioural donor risk assessment approaches to further improve the inclusiveness of blood donation.

Development and implementation of a COVID-19 convalescent plasma program in a middle-income economy

IntroductionConvalescent Plasma therapy is one of the therapeutic strategies that has been used for patients with the Covid-19 disease. Implementing a program with national extension to supply hospitals with this blood component is a great challenge mainly in a middle-income economy. ObjectivesOur objective was to develop and implement a Covid-19 Convalescent Plasma Program which met established quality standards and was adapted to a reality of limited resources. MethodsA multicentric convalescent plasma collection program was developed and implemented, based on four main sequential procedures: selective donor recruitment, pre-donation antibody screening (Anti-SARS-CoV-2- Chemiluminescence IgG Abbott), convalescent plasma collection by apheresis or whole-blood processing and distribution to the hospitals according to local demand. ResultsFrom the 572 candidates submitted to the pre-donation antibody screening, only 270 (47%) were considered eligible for plasma donation according to the established criteria. Higher levels of total antibody were associated with the donor age being above 45 years old (p = 0.002), hospital admission (p = 0.018), and a shorter interval between the diagnosis of the SARS-CoV-2 infection and plasma donation (p < 0.001). There was no association between the ABO and Rh blood groups and their antibody levels. Of the 468 donations made, 61% were from the collection of whole-blood and 39%, from apheresis. The Covid-19 Convalescent Plasma units obtained were distributed to 21 different cities throughout the country by air or ground transportation. ConclusionThe implementation of a Covid-19 Convalescent Plasma program in a continental country with relatively scarce resources is feasible with alternative strategies to promote lower cost procedures, while complying with local regulations and meeting quality standards.

Hepatitis C Virus Infection in Eastern Libya: Efforts Needed to Improve HCV Testing and Linkage to Care in the Resource-Limited Setting.

Hepatitis C virus (HCV) is a significant public health problem, and the elimination of its infection by 2031 is a global goal. However, due to insufficient testing, lack of linkage to care (LTC) and treatment, Libya may be far from achieving this goal. This study aimed to explore HCV testing, the care and treatment of infected people, and to assess the burden of the infection among individuals who visited the main Medical Centre in Tobruk region, eastern Libya, for various medical and surgical conditions. A research team interviewed public health officials in Tobruk Medical Center, inspected available equipment, and obtained data available for people who were positive for antibodies to HCV (anti-HCV) as part of their routine pre-invasive procedures and pre-donation screening tests from January 2005 to April 2020. HCV antibody tests were positive for 612 cases out of 368,392 (0.17%). Of those who tested positive for anti-HCV antibodies, no one had followed up by RNA test for identifying individuals with chronic HCV infection, and there are no links to outpatient care and treatment. Our findings highlight the critical need for an up-to-date HCV diagnosis and linkage to care guidelines, which includes a follow-up RNA test for anti-HCV positive patients and early linkage to care for confirmed cases to accelerate the elimination of HCV infection from the community.

Positive and negative aspects of mental health after unspecified living kidney donation: A cohort study.

ObjectivesUnspecified donors give a kidney to a stranger with end‐stage kidney failure. There has been little research on the long‐term impact of unspecified donation on mental health outcomes. The aim of this study was to assess the positive and negative aspects of mental health among unspecified donors.DesignWe invited all unspecified donors who donated a kidney between 2000 and 2016 at our centre to participate in an interview and to complete validated questionnaires.MethodsWe measured positive mental health using the Dutch Mental Health Continuum‐Short Form (MHC‐SF), psychological complaints using the Symptoms Checklist‐90 (SCL‐90) and psychiatric diagnoses using the Mini‐International Neuropsychiatric Interview (M.I.N.I.) Screen for all donors and the M.I.N.I. Plus on indication.ResultsOf the 134 eligible donors, 114 participated (54% female; median age 66 years), a median of 6 years post‐donation. Scores on emotional and social well‐being subscales of the MHC‐SF were significantly higher than in the general population. Psychological symptoms were comparable to the general population. Thirty‐two per cent of donors had a current or lifetime psychiatric diagnosis. Psychological symptoms did not significantly change between the pre‐donation screening and the post‐donation study.ConclusionsWe concluded that, with the appropriate screening, unspecified donation is a safe procedure from a psychological perspective.

Tissue Engineering and its Significance in Healthcare During COVID-19 Pandemic: Potential Applications and Perspectives

In the present times of the COVID-19 pandemic, there is a great need for new therapeutic and diagnostic strategies to prevent infectious diseases worldwide. Tissue engineering covers the phenomenon of the evolution of tissue, its behavior and growth factors that are better supported in the medical environment. This area of tissue engineering can support the treatment of infected patients of COVID-19 and can help fight the current crisis and viral outbreaks in general. This study aims to identify the significant advancement of tissue engineering for taking up the challenges posed by COVID-19. Major challenges faced during the COVID-19 pandemic situation in the current scenario are discussed. The significant advancements of tissue engineering in the medical field are listed in chronological order. The positive impacts of tissue engineering during the COVID 19 crisis are discussed and finally its useful applications during the ongoing COVID-19 pandemic situation are identified and briefed. This branch of science’s primary importance is to provide biological alternatives that can perform full or partial functions of the damaged, malfunctioned and failing organs or tissues in humans. It is helpful for the supply of convalescent plasma to patients especially during COVID-19. A donor is selected strictly based on a validated case of COVID-19 contagion. The donor must confirm a negative follow-up molecular examination, free from manifestations; usual good health and other pre-donation screening procedures are to be followed.

Seroprevalance of infectious diseases among blood donors, a retrospective study in MVJMC&amp;RH in rural Bengaluru

Introduction: Blood transfusion despite being a lifesaving procedure is still posing greatest threat of transmitting infectious diseases like HIV, HBsAg, HCV, Syphilis and Malaria. Even completely tested unit of blood is hazardous. Aim and Objectives: The aim of the study was to study the trend and prevalence of sero-markers among blood donors in MVJMC&RH in Hoskote Rural Bengaluru. Materials and Methods: A retrospective cross-sectional study was performed from Jan 2011 to Dec 2017 in the blood bank attached to MVJMC&RH. All blood donors who donated in blood bank and outdoor camps during the study period were included and data was analyzed. TTIs testing were done with (ELISA) 4th generation kits for HIV I & II, 3rd generation kits of Hepalisa (HBsAg), and microlisa (HCV) kits for hepatitis C virus. Screening for syphilis was done by RPR and Malaria was detected using (antigen detection kits) Advantage pan malaria cards. Results: There were a total of 9092 blood donors during the study period. out of which 8952 (98.46%) were males and 140 (1.53%) were females. 88 (0.96%) cases were positive for sero-markers for TTIs, Among the 88 seropositive cases, 9 cases of HIV (0.09 %), 48 cases of hepatitis B surface antigen HBsAg (0.52%), 7 cases of hepatitis C virus HCV (0.07%), 23 (0.25%), cases with syphilis reactivity and 1 case of malaria (0.01%) were encountered. Conclusions: Sero-prevalence of TTIs showed a downward trend, probably due to strict donor selection criteria, predonation screening and better education and awareness to donors. Keywords: HBV, HCV, HIV, Prevalence, TTI.

Incidence and risk predictors analysis of adverse donor reactions in whole blood donation.

Adverse donor reactions in normal healthy blood donors is not unusual. However, these unpleasant effects have a negative impact on donor retention. Adverse event due to blood donation is multifactorial in origin. Therefore, the objective of this study was to determine the frequency and type of adverse donor reactions during or after blood donation. More importantly, this study also aimed at analyzing important risk predictors of adverse donor reaction. This was a retrospective study conducted from May 2017 to April 2019 in the department of Transfusion Medicine at a tertiary care center in eastern India. Data were stored in Microsoft excel 2016 by using a standardized format as per ISBT criteria and analyzed with software "R, version 3.5.3" to find out the various independent precipitating factor. Overall, 107 donors (0.98%) experienced adverse events with 10,814 whole blood donations. The first time, females, younger age donors (18-30 years), and donors with a mean arterial blood pressure of less than 90mm of Hg were the most important independent risk factors predicting the possibility of adverse donor reaction. Donors' weight, hemoglobin, and the type of donation had not affected the frequency of adverse events. Analysis of adverse donor reactions helps in selecting the blood donors who are at risk of donor reactions. Our study highlights the importance of proper predonation screening especially in terms of assessment of mean blood pressure, along with identification of first time and female blood donors in order to reduce untoward donor reaction.

&lt;p&gt;Blood Donor Deferral Analysis in Relation to the Screening Process: A Single-Center Study from Southern India with Emphasis on High Hemoglobin Prevalence&lt;/p&gt;

PurposeDonor deferral results in loss of potential, motivated blood donors, and thereby, availability of blood for needy patients. This study analyses the frequency and reasons for donor deferral, including high hemoglobin deferral, which is underreported in India.MethodsRetrospective analysis of the deferral record of whole blood donors from January 2014 to December 2018 was performed with respect to the pre-donation screening process at our center. Accordingly, the deferrals are categorized as stage1 – evaluation of Donor History Questionnaire (DHQ), stage 2 – medical examination, stage 3 – hemoglobin (Hb) check using copper sulfate method or a gradually implemented quantitative hemoglobin analyzer, and stage 4 – before phlebotomy. Donor demographic details, donation frequency, and deferral reasons were noted. Descriptive statistical analysis was performed using SPSS version 20 (IBM, USA).ResultsOf 99,680 pre-donation screenings, 10.6% was deferred. The highest deferral (56.02%) was at stage 3 (based on hemoglobin level) contributed by low (52.45%) and high (3.75%) hemoglobin deferrals against cut-off of 12.5 to 18 g/dl. High Hb was noted only in male donors when screened by hemoglobin analyzer. Further, a steady fall in low hemoglobin but a rise in high hemoglobin deferral rate owing to the gradual implementation of hemoglobin analyzer over the study period was noted. The deferrals in stage 1, 2, and 4 were 29.64%, 13.97%, and 0.36%, respectively. Overall, the deferral rate was higher in females (49.88%), and in first-time (13.63%), and 18 to 25 yrs age-group (4.25%) donors for low Hb, underweight, and tattooing/ear piercing.ConclusionInsights on donor deferral reasons promote proactive measures towards donor recruitment and retention. Further, donor hemoglobin screening by quantitative method, if followed uniformly by all blood centers across the country, will help identify the true prevalence of high hemoglobin in Indian blood donors and ensures donor safety.