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Mo Y, Jin F, Li D, Zou W, Zhong J, Tong Z, Wang W, Qian F. Prevalence and molecular characteristics of occult hepatitis B virus infection among blood donors in Huzhou City, eastern China. Gene 2024; 927:148718. [PMID: 38914243 DOI: 10.1016/j.gene.2024.148718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 05/23/2024] [Accepted: 06/20/2024] [Indexed: 06/26/2024]
Abstract
Occult hepatitis B virus (HBV) infection (OBI) is a significant challenge for HBV prevention and control. We investigated the prevalence and surface (S) gene mutations of OBI among blood donors in Huzhou City, eastern China. The hepatitis B surface antigen (HBsAg) was routinely screened among 44,256 blood donors. HBV-DNA was detected using the Roche cobas®system. Serum samples that were HBsAg negative and HBV-DNA positive were selected, and the HBV S gene was amplified and sequenced. HBV genotype and S gene mutations were analyzed. The OBI rate in these blood donors was 0.070 % (31/44,256). Among the blood donors with OBI, only two cases (2/31, 6.5 %) were anti-HBc negative. The S gene sequences of 28 samples were successfully obtained, and we found that HBV genotype C (21/28, 70 %) was predominant among blood donors with OBI. Most S gene mutations were associated with OBI, and the high frequency mutations included N40S, G44E, Q51R/P, T113A/S,T118K/M, P120Q/S/T, and Y161F/S. Notably, amino acid substitutions at some sites differed from those reported previously, such as Y72F, G102V, P127L, Q129P, and S143T. Additionally, six novel mutations (S31I/N/R, P46L, S58C, C76Y, Y200F/C, and I208T) that may be associated with OBI were found. OBI was detected in a certain proportion of blood donors in Huzhou City. S gene mutations play an important role in OBI development. Further research is required to explore the functions of novel S gene mutants in OBI pathogenesis. The findings of this study may provide important insights to prevent HBV transmission through blood transfusions.
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Affiliation(s)
- Yanping Mo
- Huzhou Center Blood Station, 577 Fenghuang Road, Huzhou, Zhejiang 313000, China
| | - Fang Jin
- Departmentof Precision Medicine, Huzhou Central Hospital, Affiliated Central Hospital, Huzhou University, Huzhou, Zhejiang 313000, China; Huzhou Key Laboratory of Precision Medicine Research and Translation for Infectious Diseases, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Huzhou, Zhejiang 313000, China
| | - Dongli Li
- Departmentof Precision Medicine, Huzhou Central Hospital, Affiliated Central Hospital, Huzhou University, Huzhou, Zhejiang 313000, China; Huzhou Key Laboratory of Precision Medicine Research and Translation for Infectious Diseases, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Huzhou, Zhejiang 313000, China
| | - Weihua Zou
- Department of Laboratory Medicine, Huzhou Central Hospital, Affiliated Central Hospital, Huzhou University, Huzhou, Zhejiang 313000, China
| | - Jianfeng Zhong
- Huzhou Key Laboratory of Precision Medicine Research and Translation for Infectious Diseases, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Huzhou, Zhejiang 313000, China; Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital, Huzhou University, Huzhou, Zhejiang 313000, China
| | - Zhaowei Tong
- Huzhou Key Laboratory of Precision Medicine Research and Translation for Infectious Diseases, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Huzhou, Zhejiang 313000, China; Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital, Huzhou University, Huzhou, Zhejiang 313000, China
| | - Weihong Wang
- Huzhou Key Laboratory of Precision Medicine Research and Translation for Infectious Diseases, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Huzhou, Zhejiang 313000, China; Department of Infectious Diseases, Huzhou Central Hospital, Affiliated Central Hospital, Huzhou University, Huzhou, Zhejiang 313000, China
| | - Fuchu Qian
- Departmentof Precision Medicine, Huzhou Central Hospital, Affiliated Central Hospital, Huzhou University, Huzhou, Zhejiang 313000, China; Huzhou Key Laboratory of Precision Medicine Research and Translation for Infectious Diseases, Huzhou Central Hospital, Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Huzhou, Zhejiang 313000, China.
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Zhu H, Ding W, Han W, Zheng X, Hu Y, Dong J, Wu Y, Wu D, Liu J, Zhu F. Prevalence and Residual Risk of HIV in Volunteer Blood Donors of Zhejiang Province, China, from 2018 to 2022. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2024; 2024:4749097. [PMID: 38826677 PMCID: PMC11142854 DOI: 10.1155/2024/4749097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 04/26/2024] [Accepted: 05/06/2024] [Indexed: 06/04/2024]
Abstract
Background Blood safety levels have been significantly improved since the implementation of nucleic acid amplification technology (NAT) testing for blood donors. However, there remains a residual risk of transfusion transmission infections. This study aimed to evaluate the prevalence of HIV and its residual risk transmission among volunteer blood donors of Zhejiang Province, China, for five years after NAT implementation. Materials and Methods All specimens and information were collected from voluntary unpaid donors at all blood services in Zhejiang Province, China, from January 2018 to December 2022. The HIV antibody or antigen and HIV RNA were detected using enzyme-linked immunosorbent assay and NAT, respectively. The HIV residual risk transmission was calculated using the incidence or window period model. Results A total of 3,375,678 voluntary blood donors were detected, revealing an HIV prevalence of 9.92/100000. The HIV prevalence of blood donors in 12 blood services in Zhejiang Province was 6.11, 6.98, 7.45, 8.21, 8.36, 8.94, 9.04, 9.66, 9.73, 10.22, 11.80, and 12.47 per 100000 donors, without statistically significant difference observed among the services (p > 0.05). The HIV prevalence of males (15.49/100000) was significantly higher compared to females (1.95/100000; p < 0.05). There was an insignificant difference in HIV prevalence among blood donors of all different age groups (p > 0.05), but the HIV prevalence in the 26-35 age group and 18-25 age group was significantly higher compared to the 36-45 age group (p < 0.05). The difference in HIV prevalence between first-time blood donors (13.65/100,000) and repeat blood donors (6.78/100,000) was statistically significant (p < 0.05). From 2018 to 2022, the HIV residual risk in blood transfusion transmission was 0.266/100000. Conclusion The prevalence of HIV among blood donors in Zhejiang Province, China, is associated with age, gender, and times of blood donation. The HIV residual risk in blood transfusion transmission remains low in the province, and increasing the rate of repeat blood donors is beneficial to improve blood safety.
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Affiliation(s)
- Hong Zhu
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Wei Ding
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Wenjuan Han
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Xiaofan Zheng
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Yiqing Hu
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Jie Dong
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Yaling Wu
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Danxiao Wu
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Jinhui Liu
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
| | - Faming Zhu
- Blood Center of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Jianye Road 789, Hangzhou, Zhejiang 310052, China
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Wu D, Hu Y, Wang M, Wu Y, Dong J, Liu J, Hu W. Establishing a screening strategy for non-discriminatory reactive blood donors by constructing a predictive model of hepatitis B virus infection status from a single blood center in China. Front Public Health 2024; 12:1366431. [PMID: 38601498 PMCID: PMC11004229 DOI: 10.3389/fpubh.2024.1366431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 03/18/2024] [Indexed: 04/12/2024] Open
Abstract
Background When employing the transcription-mediated amplification method for screening blood donors, there are some non-discriminatory reactive results which are screening assay reactive but HBV-DNA discriminatory assay negative. This raises concerns regarding the possibility of false positives among donors, which may lead to permanent deferral of blood donors and affect blood supply. This study aimed to elucidate the infection status of these non-discriminatory reactive blood donors and develop and validate a model to predict individualized hepatitis B status to establish an optimal screening strategy. Methods Supplementary tests were conducted on initial non-discriminating reactive donations to determine their HBV infection status, including repeat testing, viral load, serological marker detection, and follow-up. Primary clinical variables of the donors were recorded. Based on the Akaike information criterion, a stepwise forward algorithm was used to identify the predictive factors for information and construct a predictive model. The optimal screening strategy was determined through cost-effectiveness analysis. Results At the Blood Center of Zhejiang Province, 435 cases of initial non-discriminatory reactive donations were collected over two successive periods and sub-categorized through repeated testing into the following three groups: non-repeated positive group, non-discriminated positive group, and non-repeated HBV-DNA positive group. The HBV discriminatory rate increased after repeated testing (110/435, 25.29%). According to supplementary tests, the HBV-DNA positivity rate was 65.52% (285/435), and occult HBV infection was a significantly different among groups (χ2 = 93.22, p < 0.01). The HBV serological markers and viral load in the non-repeated positive group differed from those in the other two groups, with a lower viral load and a higher proportion of false positives. The predictive model constructed using a stepwise forward algorithm exhibited high discrimination, good fit, high calibration, and effectiveness. A cost-effectiveness analysis indicated that utilizing repeated discriminatory testing and the predictive model is an extremely beneficial screening approach for non-discriminatory reactive blood donors. Conclusion Nearly two-third (65.52%) of the non-discriminatory reactive blood donors were HBV-DNA positive. Our innovative approach of constructing a predictive model as a supplementary screening strategy, combined with repeated discriminatory experiments, can effectively identify the infection status of non-discriminatory reactive blood donors, thereby increasing the safety of blood transfusions.
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Affiliation(s)
- Danxiao Wu
- Department of Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China
| | - Yiqin Hu
- Department of Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
| | - Min Wang
- Department of Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
| | - Yaling Wu
- Department of Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China
| | - Jie Dong
- Department of Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China
| | - Jinhui Liu
- Department of Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China
| | - Wei Hu
- Department of Laboratory, Blood Center of Zhejiang Province, Hangzhou, China
- Key Laboratory of Blood Safety Research of Zhejiang Province, Hangzhou, China
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Zheng W, Li H, Yang X, Wang L, Shi Y, Shan H, He L, Liu J, Chen H, Wang G, Zhao Y, Han C. Trends and prediction in the incidence rate of hepatitis C in Shandong Province in China from 2004 to 2030. Prev Med 2023; 177:107749. [PMID: 37918447 DOI: 10.1016/j.ypmed.2023.107749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 10/28/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Hepatitis C threatens human health and brings a heavy economic burden. Shandong Province is the second most populous province in China and has uneven regional economic development. Therefore, we analyzed the incidence rate trend and regional differences of hepatitis C in Shandong Province from 2004 to 2021. METHODS The monthly and annual incidence rates of hepatitis C in Shandong Province from 2022 to 2030 were predicted by fitting Autoregressive Integrated Moving Average model (ARIMA), Long Short-Term Memory (LSTM) and ARIMA-LSTM combined model. RESULTS From 2004 to 2021, annual new cases of hepatitis C in Shandong Province increased from 635 to 5834, with a total of 61,707 cases. The incidence rate increased from 0.69/100 thousand in 2004 to 6.40/100 thousand in 2019, with a slight decrease in 2020 and 2021. The average annual incidence rate was 3.47/100 thousand. In terms of regional distribution, the hepatitis C incidence rate in Shandong Province was generally high in the west and low in the east. It is estimated that the hepatitis C incidence rate in Shandong Province will be 9.21 per 100 thousand in 2030. CONCLUSION The hepatitis C incidence rate in Shandong Province showed an increasing trend from 2004 to 2019 and a decreasing trend in 2020 and 2021. Significant regional variations in incidence rate existed. An upward trend in incidence rate is predicted from 2022 to 2030. It is necessary to strengthen the prevention and control of hepatitis C to achieve the goal of eliminating viral hepatitis by 2030.
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Affiliation(s)
- Wanying Zheng
- School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China
| | - Hongyu Li
- School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China
| | - Xingguang Yang
- Shandong Center for Disease Control and Prevention, Jinan, Shandong 250013, China
| | - Luyang Wang
- School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China
| | - Yukun Shi
- School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China
| | - Haifeng Shan
- Zibo Mental Health Center, Zibo, Shandong, 255100, China
| | - Lianping He
- School of medicine, Taizhou University, Taizhou, Zhejiang 318000, China
| | - Junyan Liu
- School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China
| | - Haotian Chen
- School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China
| | - Guangcheng Wang
- School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China
| | - Yang Zhao
- The George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia; Digital Health and Stroke Program, The George Institute for Global Health, Beijing, China.
| | - Chunlei Han
- School of Public Health and Management, Binzhou Medical University, Yantai, Shandong 264003, China.
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Albshri M, Manikandan P, Allahyani M, Aljuaid A, Almehmadi MM, Alzabeedi K, Babalgaith M, Alghamdi M, Alharbi F, Alhazmi M. The Prevalence of Transfusion-Transmitted Diseases Among Blood Donors in the Central Blood Bank in Makkah, Saudi Arabia. Cureus 2023; 15:e48881. [PMID: 38106789 PMCID: PMC10724763 DOI: 10.7759/cureus.48881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2023] [Indexed: 12/19/2023] Open
Abstract
Background This study aimed to analyze the health and demographic characteristics of blood donors in Makkah, Saudi Arabia, and assess the prevalence and correlation of two markers related to hepatitis B infection: hepatitis B virus surface antigen (HBsAg) and anti-hepatitis B virus surface antibody (HBsAb). Materials and methods The study used a retrospective design and collected data from the Central Blood Bank in Makkah, Saudi Arabia, in 2022. The sample size was 7,875 blood donors. The study used various methods, such as serological testing, nucleic acid testing (NAT), and statistical analysis. The data were analyzed using Pearson correlation to examine the relationships between different variables. Results The predominant age group was 29-39 years, accounting for 46.9% of the total donors. In terms of blood types, O+ve was the most common, representing 40.3% of the donors. The investigation into infectious markers revealed overall low levels of reactivity among donors. For HBsAg, a marker of active hepatitis B infection, only 0.36% of the units were reactive. Conversely, the anti-HBsAb, which indicates immunity to hepatitis B, was reactive in 6.83% of the units. The correlation analysis illuminated some critical relationships. The total number of units tested had a statistically significant, albeit weak, positive relationship with HBsAg reactivity, shown by a Pearson correlation coefficient of 0.030 and a p-value of 0.008. Conversely, the total number of units tested and anti-HBsAb reactivity showed a moderate negative correlation, with a Pearson correlation coefficient of -0.437 and a p-value of less than 0.001. However, no significant correlation was identified between HBsAg and anti-HBsAb reactivity, indicating that active infection and immunity status might not be directly linked. Conclusion This extensive study provides in-depth insights into the sociodemographic characteristics of blood donors and the prevalence of key infectious markers within this population. It underlines the imperative of rigorous screening of blood units, particularly given the low immunity levels to hepatitis B identified. Also, the study showed the importance of screening blood units and vaccinating people against hepatitis B. It also suggested the need for more research on blood safety and infection-immunity relationships.
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Affiliation(s)
| | - Palanisamy Manikandan
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah, SAU
| | - Mamdouh Allahyani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, SAU
| | - Abdulelah Aljuaid
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, SAU
| | - Mazen M Almehmadi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, SAU
| | - Kamal Alzabeedi
- Department of Clinical Biochemistry, The Regional Laboratory, Makkah, SAU
| | - Mohamed Babalgaith
- Central Blood Bank, General Directorate of Health Affairs, Makkah Region, Makkah, SAU
| | - Mosa Alghamdi
- Central Blood Bank, General Directorate of Health Affairs, Makkah Region, Makkah, SAU
| | - Faris Alharbi
- Central Blood Bank, General Directorate of Health Affairs, Makkah Region, Makkah, SAU
| | - Mohammed Alhazmi
- Central Blood Bank, General Directorate of Health Affairs, Makkah Region, Makkah, SAU
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Wang SX, Sun LY, Yu Q, Li T, Li R, Xu YP, Zeng JF. Demographic Factors Among HIV Confirmed Blood Donors from 2013 to 2021 in Shenzhen. Int J Gen Med 2023; 16:425-434. [PMID: 36760684 PMCID: PMC9904141 DOI: 10.2147/ijgm.s397236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/24/2023] [Indexed: 02/05/2023] Open
Abstract
Background New HIV (Human immune deficiency virus) infections are continuously increasing in China and it remains a huge challenge to blood donation. As access to health services has affected by COVID-19 (Corona virus disease 2019) pandemic, a drop in new diagnoses (especially HIV) was observed worldwide. Methods During 2013-2021, 735,247 specimens from unpaid blood donors collected by Shenzhen Blood Center underwent ELISA (Enzyme -linked immunosorbent assay) and NAT (Nucleic acid test). Samples with reactivity results were sent to the Shenzhen Center for Disease Control and Prevention for WB (Western blot). All data were statistically analyzed by the Chi-Square test. Results From 2013 to 2021, the prevalence of HIV among male blood donors was higher than in females (P < 0.01). During the COVID-19 pandemic, the prevalence of HIV among repeat blood donors decreased significantly compared to 2019 (P < 0.05), and the characteristics of blood donors changed in 2020 compared to 2019 and 2021. Conclusion The high proportion of female blood donors would help prevent HIV from getting into the blood supply. The COVID-19 pandemic affected the demographics of blood donors as well as the prevalence of HIV among repeat blood donors. An increased number of repeat blood donors can help decrease the risk of HIV transfusion transmission during the epidemic.
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Affiliation(s)
- Song-Xing Wang
- Shenzhen Blood Center, Shenzhen, Guangdong, People’s Republic of China
| | - Li-Yan Sun
- Shenzhen Blood Center, Shenzhen, Guangdong, People’s Republic of China
| | - Qiong Yu
- Shenzhen Blood Center, Shenzhen, Guangdong, People’s Republic of China
| | - Tong Li
- Shenzhen Blood Center, Shenzhen, Guangdong, People’s Republic of China
| | - Ran Li
- Shenzhen Blood Center, Shenzhen, Guangdong, People’s Republic of China
| | - Yun-Ping Xu
- Shenzhen Blood Center, Shenzhen, Guangdong, People’s Republic of China,Correspondence: Yun-Ping Xu; Jin-Feng Zeng, Email ;
| | - Jin-Feng Zeng
- Shenzhen Blood Center, Shenzhen, Guangdong, People’s Republic of China
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Muacevic A, Adler JR, Irfan M, Mohammad MF, Kazmi FH, Fatima Z. Effectiveness of Using Nucleic Acid Amplification Test to Screen Blood Donors for Hepatitis B, Hepatitis C, and HIV: A Tertiary Care Hospital Experience From Pakistan. Cureus 2023; 15:e34216. [PMID: 36852365 PMCID: PMC9958204 DOI: 10.7759/cureus.34216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/22/2023] [Indexed: 01/27/2023] Open
Abstract
Background Ensuring blood safety is the primary goal of transfusion medicine. Despite extensive serological tests and strict safety measures, the risk of transfusion-transmitted infections (TTIs) still exists. As applied to blood screening, Nucleic Acid Amplification Test (NAT) offers much higher sensitivity for detecting viral infections. It is, however, currently available to a handful of centers due to the high cost. This study aims to establish the Effectiveness of NAT by assessing the NAT yield and residual risk of transmission of Hepatitis B virus (HBV), hepatitis C virus (HCV) and HIV with and without NAT testing. Material and method This prospective cross-sectional study recruited blood donors from January 2020 to November 2022. All donors underwent routine serologic screening. Only serologically negative donors were tested for HBV, HCV, and HIV by NAT. The NAT yield and residual risk (RR) per million donors were computed for viral infections in seronegative blood donors and calculated using the incidence/window period model. Result A total of 59708 donors were included during the study period. The overall prevalence of TTI's were: For HCV 1.7% (n = 1018), HBV 1.5% (n = 918), HIV 0.07% (n = 47), Syphilis 1.2% (n = 758) and malaria 0.3% (n = 218). Out of 57759 seronegative donors, thirty-four NAT-reactive samples were identified, with 3 cases of HCV, 31 cases of HBV, and Nil HIV cases. NAT yield of HBV was 1 in 1863 with an RR of 8.6 per million, followed by HCV with a NAT yield of 1 in 19253 and RR of 0.8 per million donations. NAT testing reduced RR for HBV by 48.9% and HCV by 94.5%. Conclusion Our study showed that NAT detected 34 out of 57759 cases initially missed by serological tests. The study suggests that the parallel use of serology and NAT screening of donated blood would be beneficial.
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