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Qian W, Wang X, Wang T, Huang J, Zhang Q, Li Y, Chen S. Development of RPA-Cas12a-fluorescence assay for rapid and reliable detection of human bocavirus 1. Animal Model Exp Med 2024; 7:179-188. [PMID: 36794352 PMCID: PMC11079142 DOI: 10.1002/ame2.12298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 11/24/2022] [Indexed: 02/17/2023] Open
Abstract
Human bocavirus (HBoV) 1 is considered an important pathogen that mainly affects infants aged 6-24 months, but preventing viral transmission in resource-limited regions through rapid and affordable on-site diagnosis of individuals with early infection of HBoV1 remains somewhat challenging. Herein, we present a novel faster, lower cost, reliable method for the detection of HBoV1, which integrates a recombinase polymerase amplification (RPA) assay with the CRISPR/Cas12a system, designated the RPA-Cas12a-fluorescence assay. The RPA-Cas12a-fluorescence system can specifically detect target gene levels as low as 0.5 copies of HBoV1 plasmid DNA per microliter within 40 min at 37°C without the need for sophisticated instruments. The method also demonstrates excellent specificity without cross-reactivity to non-target pathogens. Furthermore, the method was appraised using 28 clinical samples, and displayed high accuracy with positive and negative predictive agreement of 90.9% and 100%, respectively. Therefore, our proposed rapid and sensitive HBoV1 detection method, the RPA-Cas12a-fluorescence assay, shows promising potential for early on-site diagnosis of HBoV1 infection in the fields of public health and health care. The established RPA-Cas12a-fluorescence assay is rapid and reliable method for human bocavirus 1 detection. The RPA-Cas12a-fluorescence assay can be completed within 40 min with robust specificity and sensitivity of 0.5 copies/μl.
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Affiliation(s)
- Weidong Qian
- School of Food and Biological EngineeringShaanxi University of Science and TechnologyXi'anP. R. China
| | - Xuefei Wang
- School of Food and Biological EngineeringShaanxi University of Science and TechnologyXi'anP. R. China
| | - Ting Wang
- School of Food and Biological EngineeringShaanxi University of Science and TechnologyXi'anP. R. China
| | - Jie Huang
- School of Food and Biological EngineeringShaanxi University of Science and TechnologyXi'anP. R. China
| | - Qian Zhang
- Department of DermatologyHuazhong University of Science and Technology Union Shenzhen HospitalShenzhenP. R. China
| | - Yongdong Li
- Ningbo Municipal Center for Disease Control and PreventionNingboP. R. China
| | - Si Chen
- Medical College of Shenzhen UniversityShenzhenP. R. China
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2
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Jia J, Zhong Y, Zhang H, Yuan D, Ma L, Wang D, Zhang J, Ma Y. Identification of human parvovirus 4 genotypes 1 and 2 in Chinese source plasma pools. J Med Virol 2021; 93:4780-4785. [PMID: 33200412 PMCID: PMC8359957 DOI: 10.1002/jmv.26666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/23/2020] [Accepted: 11/09/2020] [Indexed: 12/16/2022]
Abstract
Human parvovirus B19 (B19V) and human parvovirus 4 (PARV4) are known to infect humans and transmit through contaminated blood and blood products. Globally, three genotypes of B19V, as well as PARV4, have been identified, respectively. The existence of different B19V genotypes in Chinese plasma donors has been investigated, however, the data regarding PARV4 were not available. The main objective of this study is to identify the genotypes of PARV4 circulating in Chinese plasma donors. By using a duplex quantitative polymerase chain reaction assay adapted for all genotypes of B19V and PARV4, 78 source plasma pools for fractionation were screened and quantified. Results showed that positive rates of B19V and PARV4 DNA in plasma pool samples were 25.64% and 14.10%, respectively. PARV4 sequences in two positive samples were next genotyped, and these two sequences belonged to PARV4 genotypes 1 and 2, respectively. In conclusion, the data present demonstrate the existence of PARV4 genotypes 1 and 2 in Chinese plasma donors for the first time and also show the relatively lower prevalence and level of PARV4 DNA in Chinese plasma donors in comparison with that of B19V DNA. At least two PARV4 genotypes, 1 and 2, were currently present in China.
The prevalence and level of PARV4 DNA in Chinese plasma donors were relatively lower in comparison with that of B19V DNA.
The rate of B19V and PARV4 coinfection in Chinese source plasma pools was low.
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Affiliation(s)
- Junting Jia
- Department of Transfusion Medicine, The First Medical Center, Chinese PLA General Hospital, Beijing, China.,NMPA Key Laboratory for Quality Control of Blood Products, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, China
| | - Yadi Zhong
- NMPA Key Laboratory for Quality Control of Blood Products, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, China.,Department of Hematology, Second Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Huan Zhang
- NMPA Key Laboratory for Quality Control of Blood Products, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, China
| | - Dian Yuan
- NMPA Key Laboratory for Quality Control of Blood Products, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, China
| | - Limin Ma
- NMPA Key Laboratory for Quality Control of Blood Products, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, China
| | - Deqing Wang
- Department of Transfusion Medicine, The First Medical Center, Chinese PLA General Hospital, Beijing, China
| | - Jingang Zhang
- NMPA Key Laboratory for Quality Control of Blood Products, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, China
| | - Yuyuan Ma
- NMPA Key Laboratory for Quality Control of Blood Products, Institute of Health Service and Transfusion Medicine, Academy of Military Medical Sciences, Beijing, China
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3
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Beyond Cytomegalovirus and Epstein-Barr Virus: a Review of Viruses Composing the Blood Virome of Solid Organ Transplant and Hematopoietic Stem Cell Transplant Recipients. Clin Microbiol Rev 2020; 33:33/4/e00027-20. [PMID: 32847820 DOI: 10.1128/cmr.00027-20] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Viral primary infections and reactivations are common complications in patients after solid organ transplantation (SOT) and hematopoietic stem cell transplantation (HSCT) and are associated with high morbidity and mortality. Among these patients, viral infections are frequently associated with viremia. Beyond the usual well-known viruses that are part of the routine clinical management of transplant recipients, numerous other viral signatures or genomes can be identified in the blood of these patients. The identification of novel viral species and variants by metagenomic next-generation sequencing has opened up a new field of investigation and new paradigms. Thus, there is a need to thoroughly describe the state of knowledge in this field with a review of all viral infections that should be scrutinized in high-risk populations. Here, we review the eukaryotic DNA and RNA viruses identified in blood, plasma, or serum samples of pediatric and adult SOT/HSCT recipients and the prevalence of their detection, with a particular focus on recently identified viruses and those for which their potential association with disease remains to be investigated, such as members of the Polyomaviridae, Anelloviridae, Flaviviridae, and Astroviridae families. Current knowledge of the clinical significance of these viral infections with associated viremia among transplant recipients is also discussed. To ensure a comprehensive description in these two populations, individuals described as healthy (mostly blood donors) are considered for comparative purposes. The list of viruses that should be on the clinicians' radar is certainly incomplete and will expand, but the challenge is to identify those of possible clinical significance.
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4
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Impact of Blood Transfusion on the Prevalence of HHpgV-1, HPgV-1, and B19V Among Iranian HCV-infected Patients With Hemophilia. J Pediatr Hematol Oncol 2020; 42:e213-e218. [PMID: 31972722 DOI: 10.1097/mph.0000000000001717] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Blood-derived products from patient with hemophilia treated by factor VIII concentrates are potential sources of transfusion-transmitted infections, including human immunodeficiency virus, hepatitis, human pegivirus-1 (HPgV-1), B19 virus, and also human hepegivirus-1 (HHpgV-1). In the current study, we investigated the impact of blood transfusion on the prevalence of HHpgV-1, HPgV-1, and B19 virus in plasma of Iranian patient with hemophilia after direct-acting antiviral treatment of hepatitis C virus (HCV) infections for the first time. MATERIALS AND METHODS A total of 170 patients with hemophilia who received direct-acting antivirals were enrolled in this study. Among them, 92 patients had a history of blood transfusion. The presence of HHpgV-1, HPgV-1, and B19 virus was detected by nested polymerase chain reaction analysis using the conserved primers. The plasmids harboring 5'-UTR and NS3 were used as positive controls for HPgV-1 and HHpgV-1, respectively. RESULTS Our data identified 3 individuals with HHpgV-1 viremia (1.76%), 11 individuals with HPgV-1 viremia (6.47%), and 33 individuals with B19 viremia (19.4%). All patients were negative for hepatitis B virus, human immunodeficiency virus, and HCV infections. These findings indicated lower transmissibility or higher rates of virus clearance for HHpgV-1, HPgV-1, and B19 virus as compared with other bloodborne human flaviviruses such as HCV. However, the prevalence of B19 virus was significantly higher than the other 2 viruses. CONCLUSION In general, these findings showed that the history of blood transfusion could increase the risk of viral transmission of bloodborne viruses among patient with hemophilia.
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Christensen A, Kesti O, Elenius V, Eskola AL, Døllner H, Altunbulakli C, Akdis CA, Söderlund-Venermo M, Jartti T. Human bocaviruses and paediatric infections. THE LANCET CHILD & ADOLESCENT HEALTH 2019; 3:418-426. [PMID: 30948251 DOI: 10.1016/s2352-4642(19)30057-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 12/16/2022]
Abstract
Human bocavirus 1 (HBoV1), belonging to the Parvoviridae family, was discovered in 2005, in nasopharyngeal samples from children with respiratory tract infections. Three additional bocaviruses, HBoV2-4, were discovered in 2009-10. These viruses have mainly been found in faecal samples and their role in human diseases is still uncertain. HBoV1 causes a wide spectrum of respiratory diseases in children, including common cold, acute otitis media, pneumonia, bronchiolitis, and asthma exacerbations. HBoV1 DNA can persist in airway secretions for months after an acute infection. Consequently, acute HBoV1 infection cannot be diagnosed with standard DNA PCR; quantitative PCR and serology are better diagnostic approaches. Because of their high clinical specificity, diagnostic developments such as HBoV1 mRNA and antigen detection have shown promising results. This Review summarises the knowledge on human bocaviruses, with a special focus on HBoV1.
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Affiliation(s)
- Andreas Christensen
- Department of Medical Microbiology, St Olavs Hospital, Trondheim, Norway; Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
| | - Olli Kesti
- Department of Paediatrics, Turku University Hospital and University of Turku, Turku, Finland
| | - Varpu Elenius
- Department of Paediatrics, Turku University Hospital and University of Turku, Turku, Finland
| | - Anna L Eskola
- Department of Education, University of Turku, Turku, Finland
| | - Henrik Døllner
- Department of Pediatrics, St Olavs Hospital, Trondheim, Norway; Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Can Altunbulakli
- Swiss Institute of Allergy and Asthma Research, University of Zürich and Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
| | - Cezmi A Akdis
- Swiss Institute of Allergy and Asthma Research, University of Zürich and Christine Kühne-Center for Allergy Research and Education, Davos, Switzerland
| | | | - Tuomas Jartti
- Department of Paediatrics, Turku University Hospital and University of Turku, Turku, Finland
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6
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Xiong YQ, Tan J, Liu YM, He Q, Li L, Zou K, Sun X. The risk of maternal parvovirus B19 infection during pregnancy on fetal loss and fetal hydrops: A systematic review and meta-analysis. J Clin Virol 2019; 114:12-20. [PMID: 30897374 DOI: 10.1016/j.jcv.2019.03.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 02/11/2019] [Accepted: 03/07/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Human parvovirus B19 (B19) is widespread infection in humans, yet the impact on adverse pregnancy outcomes is controversial. OBJECTIVE to evaluate the impact of B19 infection during pregnancy on adverse pregnancy outcome, and investigated the incidence of fetal loss and fetal hydrops after maternal B19 infection during pregnancy. STUDY DESIGN A systematic literature search was performed using Embase, Medline, PubMed, Web of science, and the Cochrane Library database for relevant publications up to 10th August 2018. Cohort studies and case-control studies were included in analyses. RESULTS In total, 36 eligible studies were included. Of these, 18 studies reported the risk of maternal B19 infection during pregnancy on fetal loss and 20 studies reported the incidence of fetal loss or fetal hydrops after maternal B19 infection. Collectively, the results indicated that maternal B19 infection increased the risk of fetal loss, spontaneous abortion, and stillbirth with ORs of 2.68 (95% CI: 2.02-3.55), 2.42 (95% CI: 1.76-3.33), and 3.53 (95% CI: 1.91-6.54), respectively, when compared with uninfected pregnant women. In addition, the incidence of fetal loss and fetal hydrops in B19 infected pregnant women was 7.6% (95% CI: 5.5-9.5) and 9.3% (95% CI: 5.6-13.0), respectively. CONCLUSIONS maternal parvovirus B19 infection during pregnancy increased the risk of fetal loss, spontaneous abortion, and stillbirth. A high incidence of fetal loss and fetal hydrops was observed in pregnant women with parvovirus B19 infection.
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Affiliation(s)
- Yi-Quan Xiong
- Chinese Evidence-based Medicine Centre and CREAT Group, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Jing Tan
- Chinese Evidence-based Medicine Centre and CREAT Group, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yan-Mei Liu
- Chinese Evidence-based Medicine Centre and CREAT Group, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Qiao He
- Chinese Evidence-based Medicine Centre and CREAT Group, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Ling Li
- Chinese Evidence-based Medicine Centre and CREAT Group, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Kang Zou
- Chinese Evidence-based Medicine Centre and CREAT Group, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Xin Sun
- Chinese Evidence-based Medicine Centre and CREAT Group, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.
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7
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Gao YL, Gao Z, He M, Liao P. Infection status of human parvovirus B19, cytomegalovirus and herpes simplex Virus-1/2 in women with first-trimester spontaneous abortions in Chongqing, China. Virol J 2018; 15:74. [PMID: 29688863 PMCID: PMC5913817 DOI: 10.1186/s12985-018-0988-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 04/17/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Infection with Parvovirus B19 (B19V), Cytomegalovirus (CMV) and Herpes Simplex Virus-1/2 (HSV-1/2) may cause fetal loses including spontaneous abortion, intrauterine fetal death and non-immune hydrops fetalis. Few comprehensive studies have investigated first-trimester spontaneous abortions caused by virus infections in Chongqing, China. Our study intends to investigate the infection of B19V, CMV and HSV-1/2 in first-trimester spontaneous abortions and the corresponding immune response. METHODS 100 abortion patients aged from 17 to 47 years were included in our study. The plasma samples (100) were analyzed qualitatively for specific IgG/IgM for B19V, CMV and HSV-1/2 (Virion\Serion, Germany) according to the manufacturer's recommendations. B19V, CMV and HSV-1/2 DNA were quantification by Real-Time PCR. RESULTS No specimens were positive for B19V, CMV, and HSV-1/2 DNA. By serology, 30.0%, 95.0%, 92.0% of patients were positive for B19V, CMV and HSV-1/2 IgG respectively, while 2% and 1% for B19V and HSV-1/2 IgM. CONCLUSION The low rate of virus DNA and a high proportion of CMV and HSV-1/2 IgG for most major of abortion patients in this study suggest that B19V, CMV and HSV-1/2 may not be the common factor leading to the spontaneous abortion of early pregnancy.
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Affiliation(s)
- Ya-Ling Gao
- Clinical Medical School, Southwest Medical University, Luzhou, 646000, China
| | - Zhan Gao
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, 610052, China.,The Sichuan Blood Safety and Blood Substitute International Science and Technology Cooperation Base, Chengdu, 610052, China
| | - Miao He
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, 610052, China. .,The Sichuan Blood Safety and Blood Substitute International Science and Technology Cooperation Base, Chengdu, 610052, China.
| | - Pu Liao
- The People's Hospital of Chongqing, Chongqing, 400000, China.
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Amirahmadi F, Sarvari J, Hosseini SY, Pirbonyeh N, Gorzin AA. Frequency of human parvovirus 4 (PARV4) viremia among HBV-infected patients and healthy donors in Shiraz, Iran. Turk J Med Sci 2017; 47:868-873. [PMID: 28618736 DOI: 10.3906/sag-1603-83] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 12/06/2016] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND/AIM PARV4, a small DNA virus belonging to the family Parvoviridae, was first isolated in an HBV injecting drug user. Several studies have investigated PARV4 co-infection with HBV and HCV and its effect on the progression of liver disease. The aim of this study was to determine the frequency of PARV4 among HBV-infected patients and healthy individuals. MATERIALS AND METHODS A group of 90 HBV patients and a group of 90 healthy subjects were included in this study. Samples were selected after screening tests such as HBsAg ELISA, anti-HCV ELISA, and anti-HIV ELISA. Nested-PCRs were conducted to detect the PARV4 genome. Positive samples were then subjected to DNA sequencing. RESULTS PARV4 DNA was detected in 4.4% of HBV patients in comparison with 1.1% of healthy individuals (P-value: 0.36). DNA sequencing results revealed that PARV4 in all five positive samples was genotype I.Conclusions: Although this pilot study showed no significant difference between the frequency of PARV4 among HBV patients and healthy donors, further studies with a larger sample size are suggested to determine the association of PARV4 with HBV co-infection and the impact of this virus on the progression of liver disease in patients with hepatitis B.
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Affiliation(s)
- Fereshte Amirahmadi
- Deparment of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Jamal Sarvari
- Deparment of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Seyed Younes Hosseini
- Deparment of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Neda Pirbonyeh
- Deparment of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Akbar Gorzin
- Deparment of Bacteriology & Virology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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9
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He M, Wang J, Chen L, Liu J, Zeng P. The Impact of Emerging Infectious Diseases on Chinese Blood Safety. Transfus Med Rev 2017; 31:94-101. [PMID: 27923518 PMCID: PMC7126663 DOI: 10.1016/j.tmrv.2016.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/19/2016] [Accepted: 10/24/2016] [Indexed: 12/16/2022]
Abstract
Emerging infectious diseases (EIDs) have always been one of the major threats to public health. Although the implementation of mandatory testing for 4 classical transfusion-transmitted infectious-human immunodeficiency virus, hepatitis B virus, hepatitis C virus, and syphilis-has reduced the transfusion risk of these pathogens, the potential threat of various EID agents and their constantly evolving variants to blood safety in China is not fully understood. This review presents 9 representative EID agents that are autochthonous and epidemic nationally or regionally in China. The epidemiologic status and distribution of these EID agents among donors and/or healthy populations are summarized. The potential risks of these EID agents to blood safety are discussed. The review also explores strategies to strengthen hemovigilance systems and studies to further evaluate the impact of EID agents on blood safety.
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Affiliation(s)
- Miao He
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, Sichuan, China
| | - Jingxing Wang
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, Sichuan, China
| | - Limin Chen
- Institute of Blood Transfusion, Chinese Academy of Medical Sciences, Chengdu, Sichuan, China
| | - Jing Liu
- Department of Pathology, Johns Hopkins University, Baltimore, MD, USA
| | - Peibin Zeng
- West China School of Public Health, Sichuan University, Chengdu, Sichuan, China.
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10
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Wang Y, Li Y, Liu J, Zhao Y, Xie Z, Shen J, Tan W. Genetic characterization of human bocavirus among children with severe acute respiratory infection in China. J Infect 2016; 73:155-63. [PMID: 27306487 PMCID: PMC7112569 DOI: 10.1016/j.jinf.2016.05.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Revised: 04/22/2016] [Accepted: 05/27/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVES To investigate the genetic character of Human bocavirus (HBoV) among children with severe acute respiratory infection (SARI) in China. METHODS We screened 993 respiratory samples for HBoV by PCR among hospitalized children with SARI between September 2007 and March 2014. Four of HBoV1 samples were selected for complete genomes analysis by next-generation sequencing. RESULTS The results show that 200 (20.1%) out of 993 samples were HBoV-positive, most of these HBoV belong to HBoV1 subtype (n = 197), HBoV2 (n = 1) and HBoV3 (n = 2) were also detected. Fifty (5.04%) of 993 SARI patient were detected as HBoV-positive only. Four HBoV1 genomes in this study were conserved and showed no significant difference among the nucleotide diversity from different regions. Analyses of evolutionary rates showed that NS1 exhibited the highest degree of conservation while the VP1 gene exhibited the fastest rate of evolution at 4.20 × 10(-4) substitutions/site/year. The nucleotide deletions and substitutions occurred in NP1 and VP1 represented novel molecular signatures enabling subtype differentiation between HBoVs. CONCLUSIONS We described some new characteristics in the epidemiology of HBoV among children with SARI, these data will significantly expand the current knowledge of HBoV epidemic and genomic characterization among children with SARI.
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Affiliation(s)
- Yanqun Wang
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China
| | - Yamin Li
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China
| | - Jun Liu
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China
| | - Yanjie Zhao
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China
| | - Zhengde Xie
- Key Laboratory of Major Diseases in Children and National Key Discipline of Pediatrics Capital Medical University, Ministry of Education, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - Jun Shen
- Children Hospital of Fudan University, Shanghai 200032, China.
| | - Wenjie Tan
- Key Laboratory of Medical Virology, Ministry of Health, National Institute for Viral Disease Control and Prevention, China CDC, Beijing 102206, China.
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11
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Zhang L, Cai C, Pan F, Hong L, Luo X, Hu S, Xu J, Chen Z. Epidemiologic study of human parvovirus B19 infection in East China. J Med Virol 2016; 88:1113-9. [PMID: 26705119 DOI: 10.1002/jmv.24459] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/22/2015] [Indexed: 12/16/2022]
Abstract
Human parvovirus B19 (B19V) infection causes a number of diseases in humans, and, in some circumstances, can be life threatening. To understand the epidemiology of B19V infection in the greater metropolitan area of Hangzhou, East China, we performed surveys of IgM and IgG antibodies against B19V and quantification of B19V DNA, by using enzyme-linked immunosorbent assay and quantitative PCR, respectively, in plasma samples from diverse groups. These groups included anemia patients, Mycoplasma pneumonia- and Treponema pallidum-infected patients, HIV-positive individuals, and healthy blood donor volunteers. Our results demonstrated a low level of B19V IgG antibody presence, ranging from 21.9% to 41.8% in all the groups tested, suggesting a low prevalence of B19V infection in the area. Of note, we found that two healthy blood donors and one Mycoplasma pneumonia-infected patient had B19V IgM antibody among 1,290 plasma samples tested. The Mycoplasma pneumonia-infected patient had viremia with viral genome copies of 2.86 × 10(6) per ml of plasma. We detected a high rate of B19V DNA (7.1%) in HIV-positive injection drug users. Importantly, an amino acid mutation of P558S in the large non-structural protein NS1 was identified to be conserved among 14 B19V isolates from the HIV-positive group but not in the B19V isolate of the Mycoplasma pneumonia-infected patient, representing a hallmark of B19V isolates that circulate in HIV1-positive patients in the greater metropolitan area of Hangzhou, East China.
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Affiliation(s)
- Lahong Zhang
- The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Chengsong Cai
- The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Feng Pan
- The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Liquan Hong
- The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Xian Luo
- The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | | | - Jiali Xu
- The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Zhaojun Chen
- The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
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