A preliminary survey of Zika virus infection by nucleic acid test in the volunteer blood donor samples in Shenzhen China

2020 ◽  
Vol 92 (8) ◽  
pp. 1326-1329
Author(s):  
Xin Zheng ◽  
Jingfeng Zeng ◽  
Xiaoxuan Xu ◽  
Yizhong Liu ◽  
Liu Heng ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Virus Infection ◽  
Blood Donor ◽  
Zika Virus ◽  
Preliminary Survey ◽  
Volunteer Blood Donor ◽  
Nucleic Acid Test ◽  
Zika Virus Infection ◽  
Acid Test

Laboratory Diagnosis of Zika Virus Infection

2016 ◽  
Vol 141 (1) ◽  
pp. 60-67 ◽  
Author(s):  
Marie Louise Landry ◽  
Kirsten St. George
Keyword(s):  
Public Health ◽  
Nucleic Acid ◽  
Virus Infection ◽  
Zika Virus ◽  
Laboratory Diagnosis ◽  
Government Support ◽  
Nucleic Acid Amplification ◽  
Diagnostic Tools ◽  
Nucleic Acid Amplification Tests ◽  
Zika Virus Infection

Context.—The rapid and accurate diagnosis of Zika virus infection is an international priority. Objective.—To review current recommendations, methods, limitations, and priorities for Zika virus testing. Data Sources.—Sources include published literature, public health recommendations, laboratory procedures, and testing experience. Conclusions.—Until recently, the laboratory diagnosis of Zika infection was confined to public health or research laboratories that prepared their own reagents, and test capacity has been limited. Furthermore, Zika cross-reacts serologically with other flaviviruses, such as dengue, West Nile, and yellow fever. Current or past infection, or even vaccination with another flavivirus, will often cause false-positive or uninterpretable Zika serology results. Detection of viral RNA during acute infection using nucleic acid amplification tests provides more specific results, and a number of commercial nucleic acid amplification tests have received emergency use authorization. In addition to serum, testing of whole blood and urine is recommended because of the higher vial loads and longer duration of shedding. However, nucleic acid amplification testing has limited utility because many patients are asymptomatic or present for testing after the brief period of Zika shedding has passed. Thus, the greatest need and most difficult challenge is development of accurate antibody tests for the diagnosis of recent Zika infection. Research is urgently needed to identify Zika virus epitopes that do not cross-react with other flavivirus antigens. New information is emerging at a rapid pace and, with ongoing public-private and international collaborations and government support, it is hoped that rapid progress will be made in developing robust and widely applicable diagnostic tools.

scholarly journals Acute Zika virus infection in an asymptomatic blood donor at the onset of the Puerto Rico epidemic

Transfusion ◽  
2019 ◽  
Vol 59 (10) ◽  
pp. 3164-3170 ◽  
Author(s):  
Paula Saa ◽  
Charles Chiu ◽  
Kacie Grimm ◽  
Guixia Yu ◽  
Richard J. Benjamin ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Virus Infection ◽  
Blood Donor ◽  
Zika Virus ◽  
Zika Virus Infection

Associations between West Nile virus infection and symptoms reported by blood donors identified through nucleic acid test screening

Transfusion ◽  
2009 ◽  
Vol 49 (2) ◽  
pp. 278-288 ◽  
Author(s):  
Brian Custer ◽  
Hany Kamel ◽  
Nancy E. Kiely ◽  
Edward L. Murphy ◽  
Michael P. Busch
Keyword(s):  
West Nile Virus ◽  
Nucleic Acid ◽  
Virus Infection ◽  
Blood Donors ◽  
West Nile Virus Infection ◽  
West Nile ◽  
Nucleic Acid Test ◽  
Acid Test

scholarly journals Experience with a triplex arbovirus nucleic acid test (NAT) at a Canadian Public Health Laboratory

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Saugata Choudhury ◽  
Raymond Tellier ◽  
Kevin Fonseca ◽  
Byron M. Berenger
Keyword(s):  
Nucleic Acid ◽  
Dengue Virus ◽  
Symptom Onset ◽  
Zika Virus ◽  
Clinical Symptoms ◽  
Clinical History ◽  
Nucleic Acid Test ◽  
Virus Rna ◽  
Prolonged Duration ◽  
Acid Test

Abstract Background Dengue, chikungunya and zika infections occur in tropical and subtropical regions of the world. We describe the utilization of an in-house nucleic acid test (NAT) targeting all three viruses for febrile returning travelers in Alberta, Canada. Methods NAT was performed until 40 days from symptom onset or exposure due to the prolonged duration of zika virus RNA detection. From Sept 1, 2017 to August 31, 2019, 2552 specimens from 1932 patients were tested. Results Approximately 2% of patients tested were NAT positive for dengue virus (n = 42), chikungunya virus (n = 4), and zika virus (n = 1). The majority presented with fever, myalgia and rash. Regions with the most frequent travel included SouthEast Asia (68.5%), South America (25%) and the Caribbean (6.5%). Ct values were stronger (~ 1.5 logs) for patients within 1–3 days following onset of clinical symptoms than those presenting later. Nineteen patients had urine and plasma submitted; 5 were positive for both specimens and 2 were positive only for dengue virus in the urine. Also, Ct values were lower for plasma when compared to the corresponding urine. RNA was detected until 10 days and 5 days post-exposure in plasma and urine respectively for dengue virus. Conclusions Owing to dengue viremia detected beyond the conventional 7 days and low levels of circulating zika virus globally, a cutoff of 14 days from symptom onset to NAT is sufficient to diagnose acute cases. Inclusion of a zoonotic history form that collects appropriate clinical history results in improved test utilization.

Congenital Zika Virus Infection Paradigm: What is in the Wardrobe? A Narrative Review

2019 ◽  
Vol 1 (1) ◽  
pp. 49-56
Author(s):  
Mariam M. Mirambo ◽  
Lucas Matemba ◽  
Mtebe Majigo ◽  
Stephen E. Mshana
Keyword(s):  
Virus Infection ◽  
Neural Tube ◽  
Zika Virus ◽  
English Language ◽  
Case Reports ◽  
Case Series ◽  
Epidemiological Studies ◽  
Ocular Manifestations ◽  
Zika Virus Infection ◽  
N 93

Background: Zika virus infection during pregnancy has been recently associated with congenital microcephaly and other severe neural tube defects. However, the magnitude of confirmed cases and the scope of these anomalies have not been extensively documented. This review focuses on the magnitude of laboratory-confirmed congenital Zika virus cases among probable cases and describing the patterns of congenital anomalies allegedly caused by the Zika virus, information which will inform further research in this area. Methods: We conducted a literature search for English-language articles about congenital Zika virus infection using online electronic databases (PubMed/MEDLINE, POPLINE, Embase, Google Scholar, and Web of Knowledge). The search terms used were, “zika”, “pregnancy”, [year], “microcephaly”, “infants”, “children”, “neonates”, “foetuses”, “neural tube defect”, and “CNS manifestations” in different combinations. All articles reporting cases or case series between January 2015 and December 2016 were included. Data were entered into a Microsoft Excel database and analysed to obtain proportions of the confirmed cases and patterns of anomalies. Results: A total of 24 articles (11 case series, 9 case reports, and 4 others) were found to be eligible and included in this review. These articles reported 919 cases, with or without microcephaly, presumed to have congenital Zika virus infection. Of these cases, 884 (96.2%) had microcephaly. Of the 884 cases of microcephaly, 783 (88.6%) were tested for Zika virus infection, and 216 (27.6%; 95% confidence interval, 24.5% to 30.8%) were confirmed to be Zika virus-positive. In addition to microcephaly, other common abnormalities reported – out of 442 cases investigated – were calcifications of brain tissue (n=240, 54.3%), ventriculomegaly (n=93, 20.8%), cerebellar hypoplasia (n=52, 11.7%), and ocular manifestations (n=46, 10.4%). Conclusion: Based on the available literature, Zika virus infection during pregnancy might lead to a wide array of outcomes other than microcephaly. There is a need for more epidemiological studies in Zika-endemic areas, particularly in Africa, to ascertain the role of Zika virus in causing congenital neurological defects.

Congenital Zika Virus Infection Paradigm: What is in the Wardrobe? A Narrative Review

2019 ◽  
Vol 1 (1) ◽  
pp. 49-56
Author(s):  
Mariam M. Mirambo ◽  
Lucas Matemba ◽  
Mtebe Majigo ◽  
Stephen E. Mshana
Keyword(s):  
Virus Infection ◽  
Neural Tube ◽  
Zika Virus ◽  
English Language ◽  
Case Reports ◽  
Case Series ◽  
Epidemiological Studies ◽  
Ocular Manifestations ◽  
Zika Virus Infection ◽  
N 93

Background: Zika virus infection during pregnancy has been recently associated with congenital microcephaly and other severe neural tube defects. However, the magnitude of confirmed cases and the scope of these anomalies have not been extensively documented. This review focuses on the magnitude of laboratory-confirmed congenital Zika virus cases among probable cases and describing the patterns of congenital anomalies allegedly caused by the Zika virus, information which will inform further research in this area. Methods: We conducted a literature search for English-language articles about congenital Zika virus infection using online electronic databases (PubMed/MEDLINE, POPLINE, Embase, Google Scholar, and Web of Knowledge). The search terms used were, “zika”, “pregnancy”, [year], “microcephaly”, “infants”, “children”, “neonates”, “foetuses”, “neural tube defect”, and “CNS manifestations” in different combinations. All articles reporting cases or case series between January 2015 and December 2016 were included. Data were entered into a Microsoft Excel database and analysed to obtain proportions of the confirmed cases and patterns of anomalies. Results: A total of 24 articles (11 case series, 9 case reports, and 4 others) were found to be eligible and included in this review. These articles reported 919 cases, with or without microcephaly, presumed to have congenital Zika virus infection. Of these cases, 884 (96.2%) had microcephaly. Of the 884 cases of microcephaly, 783 (88.6%) were tested for Zika virus infection, and 216 (27.6%; 95% confidence interval, 24.5% to 30.8%) were confirmed to be Zika virus-positive. In addition to microcephaly, other common abnormalities reported – out of 442 cases investigated – were calcifications of brain tissue (n=240, 54.3%), ventriculomegaly (n=93, 20.8%), cerebellar hypoplasia (n=52, 11.7%), and ocular manifestations (n=46, 10.4%). Conclusion: Based on the available literature, Zika virus infection during pregnancy might lead to a wide array of outcomes other than microcephaly. There is a need for more epidemiological studies in Zika-endemic areas, particularly in Africa, to ascertain the role of Zika virus in causing congenital neurological defects.

Spatial distribution of Zika virus infection in northeastern Colombia

2016 ◽  
Author(s):  
Alfonso J Rodriguez-Morales ◽  
Ubydul Haque ◽  
Jacob D Ball ◽  
Carlos Julian García-Loaiza ◽  
Maria Leonor Galindo-Marquez ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Virus Infection ◽  
Zika Virus ◽  
Zika Virus Infection
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