Distribution Of Rh Blood Groups Research Articles

Distribution of ABO And Rh Blood Groups in Blood Donors at the Tertiary Care Centre, Dahod

Introduction When it comes to blood transfusion and transplant medicine, the ABO as well as Rh blood group system are significant. There have been 700 RBC antigens found so far, and they've been divided into 30 blood groups as a result. For example, blood transfusion reaction, paternity testing, legal medicine, as well as associations with different illnesses are all medicolegally relevant when looking at ABO and Rh. Aim: The objective was to find out how much demand there is for a specific blood type compared to how much supply there is in society, to lower death rates caused by a shortage of that kind of blood. Compare the results with those from another comparable research performed in India and across the globe. Material and Methods: Between August 2018 to July 2021, researchers conducted a study on 7820 blood donors who visited the Zydus blood Centre. Tube agglutination testing and the Gel card method were used to find the patient's ABO as well as Rh blood groups. Both reverse as well as forward blood grouping methods are performed and confirmed only if both are identical. The age and sex groups as well as frequency of ABO and Rh blood groups were reported in percentages. Result The male-to-female ratio in our research was 30:1. The greatest number of male and female donors were between the ages of 18 to 30 years. For blood donation, it has been found that "O" blood donors are the most predominant, then those with B>A>AB blood groups. According to voluntary and replacement blood donors, AB & A blood groups are more (%) in replacement blood donors as compare to O and B blood groups. Voluntary donors are 33.67% and replacement donors were 66.64%. Distribution of Rh+ve and Rh-ve blood groups in our study was 98.78% and 1.22% respectively. Conclusion It is essential to have a thorough understanding of the distinct blood groups distribution for ensuring that blood as well as its components are always available to recipients in a particular area. The present work will provide insight on a deficiency of particular blood groups, in a particular area, like A and AB blood group are more in replacement donor showing deficiency of that blood groups in this area in our study.

An Insight Into the Distribution of Allele Frequency of ABO and Rh (D) Blood Grouping System Among Blood Donors in a Tertiary Care Hospital in Chengalpattu District of South India.

IntroductionThe distribution of ABO and Rh (D) blood groups and their allele frequencies vary from one population to another worldwide. The objective of the study is to estimate the distribution of ABO & Rh (D) blood groups among all the blood donors in a tertiary care hospital in Chengalpattu district of Tamilnadu in South India and to determine their allele frequencies.MethodsThis was a retrospective observational study carried out in the blood bank of Karpaga Vinayaga Institute of Medical Sciences and Research Centre from January 2015 to December 2021. ABO and Rh (D) blood grouping of all the blood donors were carried out by tube agglutination method. Allele frequency of the blood group genes was calculated based on Hardy-Weinberg equilibrium.ResultsOut of total a of 7598 blood donors, 7576 (99.71%) were males and 22 (0.29%) were females. The most common blood group was O positive (37.67%) while AB negative (0.18%) was the least common blood group. The phenotypic frequency of blood group O (39.17%) was the highest and that of blood group AB (7.88%) was the least. A majority (95.96%) of the blood donors were Rh (D) positive. The allele frequencies of ABO and Rh (D) blood groups were 0.1628 for IA, 0.2177 for IB, 0.6259 for IO, 0.7991 for ID, and 0.2009 for Id.ConclusionsThe distribution of the two major blood group systems namely ABO and Rh (D) systems show considerable heterogeneity in different populations of the world. Information about allele frequencies of blood groups among different populations worldwide will help in framing policy decisions to face future challenges in healthcare services.

Could blood groups have prognostic significance on survival in patients with diffuse large B cell lymphoma?

The prognostic importance of the ABO blood group in non-Hodgkin lymphoma is largely unknown. We aim to investigate the prognostic significance of blood groups on the survival in diffuse large B-cell lymphoma (DLBCL) patients. 412 people (206 DLBCL patients and 206 healthy donors) were included. The blood group types of patients treated at our center from 2009 to 2019 were analyzed retrospectively and compared to the results from healthy thrombocyte donors. The distribution of the ABO blood groups was as follows: blood type A (45.2%), B (9.7%), O (38.8%), and AB (6.3%). We found no statistically significant difference between patients and the control group in terms of ABO and Rhesus blood group distribution (p = 0.27 and p = 0.45, respectively). The median follow-up time was 18 months (0–116). In the Cox regression analysis ABO blood groups, and Rh group were not significant predictors of survival in patients with DLBCL, whereas ECOG score, IPI score, Ann-Arbor stage, and LDH level were found significant. Receiving R-CHOP as the first-line treatment was associated with better survival in the multivariate analysis. No statistically significant difference was found between the control and DLBCL patient groups regarding the distribution of ABO and Rh blood groups.

Blood Group Distribution Characteristics of COVID-19 Patients in Xinjiang

To analyze and summarize ABO and Rh(D) blood group distribution and related indicators of COVID-19 patients, and understand the relationship between blood group and disease course of COVID-19 patients in Xinjiang. A total of 831 patients with confirmed or asymptomatic COVID-19 infection treated in People's Hospital of Xinjiang Uygur Autonomous Region from July 2020 to August 2020 were enrolled as study group, and 2 778 healthy people in a third Grade A hospital in the region during the same period were selected as control group. ABO and Rh(D) blood group antigens were identified, and relevant medical data were collected for statistical analysis. The proportion of O-type population and Rh(D) positive population in the study group was 24.79% and 96.27%, which were lower than those in the normal control group (29.73% and 97.73%) (P<0.05). The proportion of AB type and Rh(D) negative population was 14.20% and 3.73%, which was higher than that in control group (10.62% and 2.27%) (P<0.05). The proportion of female patients in Type O group was lower than that in control group. The proportion of female patients in AB group was higher than that in control group (P<0.01), while the proportion of type O patients in the age group less than or equal to 45 years old and greater than 60 years old was lower. Different blood groups of Uygur population showed their own characteristics in different sex, but there was no statistical significance due to the limited sample (P>0.05). Moreover, the course of disease and clinical diagnosis of COVID-19 patients were different among different blood groups (P<0.05). This study found that the blood type distribution of COVID-19 patients in Xinjiang has its own characteristics, and the blood type is related to the course and clinical diagnosis of COVID-19. In the future, the data can be widely included in people from different ethnic groups and different regions to improve relevant studies.

Rh Phenotype and Allele Frequencies Among 88,856 Patients in China.

This study was performed to provide information on the frequencies of Rh antigens, alleles, and phenotypes from our region in Tianjin, China. This observational study was conducted on patients from January 2018 to March 2021 using a fully automated system for ABO and Rh typing of blood cells. The phenotypes of C, c, E, and e were detected by the slide method. The data were collected and calculations done to determine the antigen, phenotypes and allele frequencies. Four hundred thirty-three cases of Rh (D) negative phenotype were confirmed in 88,856 patients. Of the four Rh antigens (C, c, E, e) that were phenotyped by serological methods, the "e" antigen was found to have the highest frequency (99.74%). The most common Rh negative phenotype observed was ccdee, followed by Ccdee. The prevalence of Rh phenotypes ccdEe, CCdee, CcdEe, CCdEe, ccdEE were found to be rare in our population with percentages of 0.0473%, 0.018%, 0.018%, 0.0034%, and 0.0011%, respectively. Knowledge of red cell antigen phenotype frequencies in a population is helpful in terms of their ethnic distribution. We have determined the prevalence of Rh antigens and Rh phenotypes in China. The Rh blood group distribution in this population was different from that in other populations.

Absence of correlation between ABO Rh(D) blood group and neutralizing antibody titers in SARS-CoV-2 convalescent plasma donors.

Several studies have described associations between ABO blood group and SARS-CoV-2 infection severity in hospitalized patients where group A individuals are over-represented and group O individuals may have a lower infection rate. In convalescent individuals, group B blood donors have higher neutralizing SARS-CoV-2 antibody titers. We analyzed whether there was any correlation of ABO Rh(D) blood group with SARS-CoV-2 infection and with neutralizing antibodies in Australian convalescent plasma (CP) donors. ABO Rh(D) distribution and demographics of CP donors (n=765) were compared with the total blood donor panel (n=488,028), plasmapheresis donors (n=203,176) and whole blood donors (n=282,437) from 2020. The presence of neutralizing antibodies in CP donors was measured using the Vero E6 cell microneutralization assay. The distribution of ABO group in CP donors compared to the total donor panel was not significantly different (p=.177). There were significantly more group AB donors in the plasmapheresis subset (p=.005) and group O individuals were over-represented in the whole blood donor subset (p < .0001). There was no significant difference in neutralizing antibody levels among CP donors with differing ABO blood groups (p=.872). ABO Rh(D) blood group distribution was not found to be significantly different between convalescent plasma donors and general blood donors in our large sample group. Inherent blood donor selection biases associated with clinical demand accounted for some differences within CP donors. The levels of SARS-CoV-2 neutralizing antibodies were also not significantly associated with ABO Rh(D) group.

Distribution of ABO and Rhesus Blood Group Phenotypes Among Blood Donors at Bahir Dar Blood Bank, Amhara, Northwest Ethiopia: A Retrospective Cross-Sectional Study.

BackgroundAmong the blood group antigens identified, ABO and Rhesus are the most important in transfusion medicine. ABO blood group antigens are the most immunogenic followed by Rhesus (D antigen). These blood groups’ frequency distribution varies among different regions and races of the world. This study aimed to identifying the frequency distribution of ABO blood group and rhesus factors among blood donors in Ethiopia.Methods and MaterialsAretrospective cross-sectional study was conducted from September 12/2019 to March 18/2021 at Bahir Dar blood bank service. After getting a permission letter from the blood bank, data were collected from the blood bank donor data registration system, and descriptive statistical results were presented in number (frequency) and percentage. A Chi-square test was used to show the difference in the frequency distribution of ABO and Rh blood groups among sex and blood donation site.ResultsFrom 40,053 blood donors, 67.7% were males and younger donors (within the age range of 18–24 years) account for 63.7%. All donations were from voluntary non-remunerated blood donors. The most common blood group was blood group O (41.5%) followed by A (29.8), B (23.2%), and AB (5.5%). Considering ABO and Rh blood group altogether blood group O positive with 37.9% was the predominant blood group followed by A positive (27.2%), B positive (21.4%), AB positive (5%), O negative (3.6%), A negative (2.6%), B negative (1.8%), and AB negative (0.4%). The majority of study participants were 91.5% Rh (D) positive.ConclusionThis study showed that blood group O was the predominant followed by A, B, and AB and most of the blood donors’ blood groups were Rh-positive (91.5%). About 68.9% of the total donations were from the first time donor.

Distribution of AB0 and Rh blood groups in cancer patients; is A Rh (+) blood group a risk factor in colorectal cancer development?

Objective: Genetic factors have been the subject of many studies in cancer etiology. One of the most striking of these is the relationship between blood groups and cancer. Therefore, in our study, we examined the relationship between blood groups of stomach, colorectal, breast, thyroid and pancreatic cancers, which are common in general surgery practice, with single-center data. Method: We retrospectively analyzed cancer cases who applied to our University Hospital between 2005-2021. This analysis was done using a hospital database. 7899 cancer patients were included in the study. Cancer types, blood types, ages and gender of the patients were recorded. Results were analyzed statistically. Results: 55.2% of the patients included in the study were male and 42.8% were female. Of the patients, 553 (7%) were stomach, 767 (9.7%) colorectal, 779 (9.9%) breast, 625 (55.15%) thyroid, 209 (2.6% ) pancreatic cancer. 87.4% of the patients were Rh (+), 12.6% of them were Rh (-). 38% of patients A Rh (+), 5.2% A Rh (-), 13.8% B Rh (+), 2.2% B Rh (-), 7.7% AB Rh (+), 1.3% AB Rh (-), 28% 0 Rh (+), 3.8% 0 Rh (-). With the blood group distribution of all cancers; When the blood group distribution of gastric, colorectal, breast, thyroid and pancreatic cancers were compared, no statistically significant difference was found. However, it was found that the A Rh (+) blood group was higher in colorectal cancers compared to other cancers. Conclusions: In our study, no relationship was found between all cancers and blood type. In addition, no relationship was found between blood type and stomach, colorectal, breast, thyroid and pancreatic cancers, which are common in general surgery practice. Although it is generally accepted that especially A blood group is a risk factor for gastric cancer, there was no significant difference in our patient series. When AB0 and Rh blood groups were evaluated together, the A Rh (+) blood group was seen more in colorectal cancers.

The relationship between the distribution of ABO and Rh blood groups and the clinical course in children with COVID-19

Amaç: Bu çalışma, ABO ve Rh kan gruplarının çocuklarda COVID-19 sıklığını ve semptom gelişimini etkileyip etkilemediğini araştırmayı amaçlamaktadır.Gereç ve Yöntem: Çalışmaya SARS-CoV-2 PCR testi pozitif 337 çocuk ve kontrol grubu olarak 1286 sağlıklı çocuk dahil edildi.Bulgular: Rh (+) çocuklarda hasta oranı, Rh (-) çocuklara göre anlamlı derecede yüksekti (p=0,006). Kan grubu A'nın, COVID-19 vakalarında semptom geliştirme için bir risk faktörü olduğu ve riski artırdığı bulunmuştur. Rh (+) kan grubunun COVID-19 için bağımsız bir risk faktörü olduğu ve COVID-19 vakalarının semptomatik olma oranını artırdığı bulunmuştur.Sonuç: Çalışmamızdan elde edilen veriler, Rh pozitifliğinin çocukları hem COVID-19'a hem de COVID-19 durumunda semptomların gelişimine duyarlı hale getirdiğini ve kan grubu A'nın COVID-19 pozitif çocuklarda semptom geliştirme riskini artırdığını göstermektedir.

Evaluation of the Distribution of ABO and Rh Blood Groups in Sivas Province

Objective: To determine the A, B, O, AB blood group distribution and Rhesus (Rh) positivity rate of Sivas province, and thus to know the distribution of blood groups in our region and to use it in a practical and scientific manner when necessary. Method: The blood group results of a total of 50,441 individuals over the age of 18 who applied to Sivas Cumhuriyet University Health Services Application and Research Hospital for various reasons between 2018 and 2020 were analyzed retrospectively. ABO and Rh blood groups were determined according to the data obtained from the Hitachi ElecSys 2010 Rack device. Various groupings were made according to blood type, gender and age, and the results were evaluated by percentage calculation. Results: 19.387 (38.4%) people A Rh (+), 14.045 (27.8%) people O Rh (+), 7.202 (14.2%) people B Rh (+), 3445 (6.8%) ) person AB Rh (+), 2781 (5.5%) person A Rh (-), 2060 (4.08%) person O Rh (-), 1027 (2.03%) person B Rh (-), 500 (0.9%) persons were identified as AB Rh (-). In terms of Rh blood group, it was seen that 44.076 (87.3%) people were Rh (+) and 6365 (12.6%) people were Rh (-). Conclusions: In summary Sivas province of Turkey reflects the demographic. Blood type distribution rates of Sivas province are similar to other provinces in our region and the general population of our country. However, we saw differences with some other regions. It is very important to know the blood type for blood supply and storage in our region. We hope that these up-to-date data on blood group distribution in Sivas will be useful for the practice and literature in terms of blood groups database.

English

The ABO and Rh (D) blood type distributions vary from one ethnic group to another. However, they play an essential part in population genetics studies, blood transfusion practices and certain medico-legal cases. Thus, this study is aimed to assess ABO and Rh (D) blood group distribution patterns among Natural and Computational Science faculty graduating class students in Woldia University and to document a blood group database and creating awareness among blood donors for safe transfusion. To this end, blood samples from 429 (N=560) volunteer students were taken during the period of 1st February 2020 to 28th April 2020 blood donation campaign and observational cross sectional study design was performed. ABO and Rh (D) typing was done by antigen-antibody agglutination test using commercially available and standard anti-sera. Descriptive statistical measures on phenotypic frequency of ABO and Rh (D) blood types were described in simple percentages. The allelic and genotypic frequencies of the ABO and Rh blood groups were estimated using the assumption of Hardy&ndash;Weinberg equilibrium. The ABO and Rh (D) blood phenotypes respectively were found to be A (28.20%) &gt; B (25.40%) &gt; AB (24.70%) &gt; O (21.67%) and Rh+ (60.13%) &gt; Rh- (39.86%) and the combined ABO/Rh(D) blood groups were in the order A+ (16.31%) &gt; B+ (15.85%) &gt; O+ (14.21%) &gt; AB+ (13.75%) and A- (11.88%) &gt;AB- (10.95%) &gt; B- (9.55%) &gt; O- (7.45%). The allelic frequencies of IA (P), IB (q), IO(r) respectively were 0.314, 0.2939 and 0.4655. The allelic frequencies for ID = 0.3687 and for Id = 0.6313 were found. A genotypic frequency of IAIO was the most frequent (0.2923) and IBIB was the least frequent (0.0863). Whereas, IDId was most frequent (0.4655) and IDID was the least frequent (0.1359). The observed and expected frequencies of individuals having ABO blood group showed no significant difference (&chi;2 = 35.4381, df = 3; P &lt; 0.05) and Rh (D) blood phenotypes of individuals were significantly different (&chi;2 = 0.000011, df = 1; P &lt; 0.05), thus, not fitting Hardy-Weinberg assumptions. The data obtained in the present study could be used as important input for blood bank services to have better blood management and safe blood transfusion practices in different regions of Ethiopia and abroad in the future. &nbsp; Key words: ABO, allele, blood donors, blood groups, distribution, genotype, Rh (D), Woldia University.

ABO and Rh blood groups in patients with lupus and rheumatoid arthritis.

Background:Systemic lupus erythematous (SLE) and rheumatoid arthritis (RA) are autoimmune diseases in which the antigen-antibody system plays an important role. As blood group and Rh are determined by the presence or absence of antigens on the surface of red blood cells (RBCs), we aimed to determine the distribution of ABO and Rh blood groups in SLE and RA patients and its association with disease manifestations.Methods:This short communication is based on a study that was conducted on 434 SLE and 828 RA patients. We evaluated the distribution of ABO and Rh blood groups in RA and SLE patients.Results:This study projected that in lupus patients, Coombs-positive autoimmune hemolytic anemia and arthritis were more common among the B blood type and Rh-positive group, respectively. Furthermore, there was no relation between ABO and Rh blood group and rheumatoid factor (RF) and anti-Cyclic Citrullinated Peptide (anti-CCP) seropositivity. Moreover, there was no difference in distribution of blood groups in RA and SLE patients.Conclusion:The higher frequency of blood group B in hemolytic anemia, and positive Rh in arthritis in lupus patients, develop the hypothesis of probable role of ABO blood group antigen in some manifestations of lupus.

ABO and Rh blood groups distribution in Aleppo Province, Syria

ABO and Rh blood groups distribution in Aleppo Province, Syria

The Relationship between Blood Groups and Aortic Dissection.

Plenty of diseases have been found having associations with blood types, especially cardiovascular diseases. The purpose of this study was to clarify whether there is a relationship between blood groups and acute aortic dissection. We also further studied the distribution of blood groups in different types of acute aortic dissection. A total of 291 patients diagnosed with acute aortic dissection from 2011 to 2018 were enrolled and analyzed retrospectively in this study. The control group consisted of 582 patients who received plastic surgery at West China hospital from 2011 to 2018. First, we analyzed the distribution of blood groups between the study group and the control group, including the ABO, Rh, O and non-O groups. Then, we further divided the study group into two groups by the type of acute aortic dissection to determine if there was difference in blood groups between the two types of acute aortic dissection. The analysis of the distribution of ABO blood groups (p = 0.302) and Rh blood groups (p = 0.502) did not reveal statistically significant differences. There were no statistically significant differences in the distributions of ABO blood groups and Rh blood groups in different types of acute aortic dissection. Our study did not prove the incidence of acute aortic dissection, or the type of acute aortic dissection had a relationship with common blood groups.

ABO and Rh (D) blood groups distribution in Pakistan: a systematic review

ABO and Rh (D) blood groups distribution in Pakistan: a systematic review

Distribution of ABO and Rhesus Blood groups among Type-2 Diabetic subjects

ABO and Rh blood group systems have been associated with a number of diseases including type-2 diabetes mellitus (T2DM). Epidemiological studies have inconsistently associated ABO and Rhesus (Rh) blood groups with T2DM risk. To assess the distribution of ABO and Rh blood groups among type-2 diabetic subjects and to check the potential association between ABO and Rh blood groups with T2DM. This small retrospective case-control study was conducted at DM WIMS Hospital, Wayanad. One-year data (from Jan-18 to Jan-19) of fasting, postprandial or random plasma/serum glucose, HbA1c, ABO and Rh blood groups of Non- diabetic and type -2 diabetic subjects were collected from the Hospital Clinical Laboratory Medicine department. Among 280 randomly selected data, 147 are non-diabetic subjects, and 133 are confirmed and known cases of type 2 diabetic mellitus. Subjects with Blood group B has the highest distribution percentage among group-2 (59.39%) in comparison with group-1 (34.02%), followed by A (19.55%), O (18.79%), AB (2.27%). Statistical analysis using Chi-square test among ABO and Rh blood groups between group-1 and group-2 showed a significant (p&lt; 0.001) association of blood group “B +ve” and least association of blood group “O +ve” with T2DM. However, the Rh Blood groups evaluation for T2DM showed no clear association, as both Rh +ve and Rh -ve were uniformly distributed in the groups. The ABO and Rh blood groups may have a possible role to play in the development of T2DM. The subjects with B + ve blood group are at greater risk for T2DM and O + ve blood group individuals are at lower risk for T2DM. Keywords: Blood groups; ABO blood groups; Rh blood groups; Type 2 Diabetes Mellitus; distribution; association REFERENCES

ABO blood groups in COVID-19 patients; Cross-sectional study.

AimThe aim of this study was to investigate the ABO and Rh blood group distribution and clinical characteristics in patients with COVID‐19.Materials and MethodsThe clinical characteristics and blood groups of 1667 patients who were hospitalised because of COVID‐19 (with a positive PCR test) between 16 March and 10 July were reviewed cross‐sectionally.ResultsWhen blood groups of patients diagnosed with COVID‐19 and control group were compared, it was observed that there was an increase in the number of COVID‐19 patients with blood groups A and AB, decrease in the number of COVID‐19 patients with blood group O, a statistically significant increase in the number of individuals with blood group A in COVID‐19 patients compared with healthy individuals, and almost significant increase in the number of COVID‐19 patients with blood group AB and a very significant decrease in the number of COVID‐19 patients with blood group O.ConclusionOur study has found that having blood group O may be protective, that blood group A may have greater susceptibility to the disease, but this does not affect the course of the disease and is not associated with mortality.

Antalya Eğitim ve Araştırma Hastanesi Transfüzyon Merkezi’ne başvuran donörlerde ABO ve Rhesus (Rh) kan grupları dağılımının araştırılması

Amaç: Bölgemizdeki ABO ve Rhesus (Rh) kan grubu dağılımını belirleyerek transfüzyon tıbbı uygulamalarımıza ve ülkemizin kan grubu veri tabanına katkı sağlamayı amaçladık. Yöntem: Antalya Eğitim ve Araştırma Hastanesi Transfüzyon Merkezi’ne 01.01.2013 ile 01.09.2019 tarihleri arasında başvuran donörlerin ABO ve Rh kan grubu bilgileri retrospektif olarak analiz edildi. Birden fazla bağışta bulunan donörlerin tek kan grubu verisi dahil edildi. Kan grupları kolon aglutinasyon yöntemi ile saptandı. Bulgular: Başvurusu kabul edilen 15.997 donörden 10.867 donörün kan grubu çalışmaya alındı. Donörler 10.335 (% 95.10) erkek ve 532 (% 4.90) kadından oluşmakta ve yaş aralığı 37.38 ± 9.52 idi. Çalışmanın sonuçlarına göre 4.676 (% 43.0) kişi A kan grubu, 3.750 (% 34.9) kişi O kan grubu, 1.695 (%15.6) kişi B kan grubu, 706 (% 6.5) kişi AB kan grubu olarak saptanırken, 9.830 kişi (% 90.5) Rh (+) ve 1.037 kişi (% 9.5) Rh (-) olarak saptandı. Sonuç: Çalışmamızın sonuçları ülkemizin ABO ve Rh kan grubu dağılımı ile uyum göstermiştir. Ülkemiz genelinde olduğu gibi A kan grubu oranı en yüksek iken onu 0, B ve AB kan grupları izlemiştir. Antalya bölgesinde ilk kez yapılan çalışmamızın sonuçlarının transfüzyon tıbbı uygulamalarımıza, ülkemizin kan grupları dağılımı veri tabanına ve bilimsel çalışmalara katkı sağlayacağı düşünülmektedir.

Frequency of ABO and Rh Blood Group Distribution at Debre Tabor Blood Bank, Amhara Region, North-Central Ethiopia. A Six-Year Retrospective Survey.

IntroductionBlood is arranged into four groups based on their surface antigen (A, B, AB, and O). In addition to this classification based on the Rhesus factor, each blood group clustered into RH positive and RH negative. This study was done to identify the distribution of blood group and rhesus factors on the local blood bank.ObjectiveTo identify the frequency of ABO blood group and RH factors distribution on voluntary blood donator at Debre Tabor blood bank from May 2014 to May 2020.MethodsA retrospective cross-sectional survey was conducted to identify the frequency of ABO and Rh factor distribution on voluntary blood donors at Debre Tabor town blood bank. The data was collected at Debre Tabor blood bank. A six-year data and a total of 19,901 bags collected blood samples were used for summarization of the data. The data was analysed by using SPSS version 21.ResultsBlood group ”O” was the dominated one with 39.6% followed by blood group “A”, “B” and “AB” with 29.48%, 24.06%, and 6.7%, respectively. When we see the RH classifications, RH positive accounts the highest percentage 92.77% and the remaining 7.23% was Rh negatives.ConclusionIn this survey, the majority of blood groups were found “O” followed by “A”, “B”, and “AB”. Among the collected blood unities, 92.77% was RH positive. The leading blood donators were male.

Study on Frequency of ABO Blood Grouping and Rhesus Phenotype Distribution in Tamil Nadu and Pondicherry of South India

Blood is a fluid which we have in our bodies that carries oxygen from the lungs to the rest of the body and also waste to be eliminated from the body. ABO and Rh blood group system is the most important system in transfusion and organ transplants. Though, many studies have been conducted in various parts of India to determine the local ABO and Rh distribution, no Indian study has so far been conducted to explore the South Indian especially Tamil Nadu and Pondicherry ABO and Rh distribution. The present study made an attempt to provide data on ABO and Rh blood group distribution across Tamil Nadu and Pondicherry. A total of 25,000 subjects of college students were included in this study and ABO and Rh(D) grouping was performed on all these samples. Data on the frequency of ABO and Rh(D) blood groups was expressed in simple numbers and percentages. The present study explored Among the ABO grouping system the highest frequency of blood group was found to be group O [10023(40.09%)], followed by group B [7447(29.79%)], and group A[ 6393(25.57%)]. The least common blood group was AB group [1137(4.55%)]. 94.69% Rh antigen was detected and the prevalence of Rh -ve was 5.13%. Of the 25000 individuals, the most common blood group was O followed by B and A and the least blood group was AB. The present study provides information about the relative distribution of various ABO blood grouping in the Tamil Nadu and Pondicherry. This vital information may be helpful in planning for future health care blood transfusion services.