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  • Rapid and sensitive detection of hepatitis B virus by ...

    2021-5-1 · Hepatitis B virus (HBV) infection is a major public health priority. In the present study, a lateral flow strip combined with the recombinase polymerase amplification (LF-RPA) assay was developed and evaluated for rapid HBV detection. A primer/probe pair targeting the conserved region of the HBV genome was designed and applied to the LF-RPA.

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  • Rapid Detection of Hepatitis B Virus in Blood Plasma by a ...

    through blood-borne methods, HBV infection can lead to hepatitis, liver cirrhosis, and hepatocellular car-cinoma, and often coinfects with hepatitis C virus and human immunodeficiency virus [1–3]. HBV is a circular, partially double-stranded DNA virus of 3.2 kb. There are 8 known genotypes (A–H) that are divergent by >8% across the entire genome

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  • Screening for Viral Hepatitis - Addressing Viral Hepatitis ...

    The rapid test is for individuals 15 years and older who are at risk for HCV infection or who have hepatitis symptoms. The test still requires a blood sample, but it involves the use of a “test strip” that provides results in approximately 20 minutes. However, the rapid test is not sufficient to make a final diagnosis of HCV infection.

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  • (PDF) Rapid Detection of Hepatitis B Virus in Blood Plasma ...

    Clinical Infectious Diseases Advance Access published May 1, 2014 MAJOR ARTICLE Rapid Detection of Hepatitis B Virus in Blood Plasma by a Specific and Sensitive Loop- Mediated Isothermal Amplification Assay Dougbeh-Chris Nyan,1 Laura E. Ulitzky,1 Nicoleta Cehan,1 Phillip Williamson,2 Valerie Winkelman,2 Maria Rios,1 and Deborah R. Taylor1 1 Laboratory of Emerging …

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  • Hepatitis B Foundation: Hepatitis B Blood Tests

    2019-3-5 · For example, N.B.Quoc et al. developed a closed tube loop-mediated isothermal amplification assay for rapid detection of hepatitis B virus in human blood at 65 °C in less than 60 min and each test costs 5.1. In the present study, the RAA assay with DNA extraction revealed the ability to detect HBV infected clinical sample at 39 °C within 30 min.

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  • A rapid and sensitive recombinase aided amplification ...

    2014-10-1 · The assay can also detect co-infections with more than one virus without affecting sensitivity or specificity. Another advantage of this test is that it uses 200 μL of serum to test for the presence of five pathogens, while more than 1 mL per assay may be needed for FDA-approved individual PCR assays. The time taken for the completion of the assay from including nucleic acid …

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  • Rapid and sensitive approach to simultaneous detection of ...

    2020-1-21 · A rapid diagnostic assay ( HCV Ag-Ab Combo) for simultaneous detection of HCV core antigen and anti-HCV antibodies for early diagnosis of HCV infection was developed. HCV Ag-Ab Combo was evaluated in order to determine its potential for detection of HCV infection earlier than anti-HCV antibody detection assays.

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  • Design of a novel rapid immunoassay for simultaneous ...

    2021-7-9 · The typical course of acute hepatitis B is shown in Fig. 4A. HBV DNA followed shortly afterward by HBsAg and HBeAg are the first viral markers detected in serum.23HBsAg may be detected as early as 1–2 weeks or as late as 11–12 weeks after exposure, and its persistence is a marker of chronicity.

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  • Hepatitis B: The Virus and Disease

    Single-antigen hepatitis B vaccines. ENGERIX-B® RECOMBIVAX HB® HEPLISAV-B™ Combination vaccines. PEDIARIX®: Combined hepatitis B, diphtheria, tetanus, acellular pertussis (DTaP), and inactivated poliovirus (IPV) vaccine. Cannot be administered before age 6 weeks or after age 7 years. TWINRIX®: Combined Hepatitis A and hepatitis B vaccine.

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  • (PDF) Rapid detection and quantitation of hepatitis B ...

    Journal of Clinical Virology 30 (2004) 191–195 Rapid detection and quantitation of hepatitis B virus DNA by real-time PCR using a new fluorescent (FRET) detection system Sani Hussein Aliyu a,∗ , Muktar Hassan Aliyu b , Hamisu M. Salihu b , Surendra Parmar a , Hamid Jalal a , Martin David Curran a a Health Protection Agency, Clinical Microbiology and Public Health Laboratory …

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  • Hepatitis B Foundation: Hepatitis B Blood Tests

    2019-3-5 · Background. Hepatitis B virus (HBV) is an enveloped virus containing about 3.2 kb, partially double-stranded DNA genome and can be classified into eight genotypes (A to H) [].Different genotypes have distinct geographic distributions, genotype A is pandemic, B and C are mainly prevalent in Asia, D in southern Europe, E in Africa, F in the USA, and G in the USA and …

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  • A rapid and sensitive recombinase aided amplification ...

    Clinical Infectious Diseases Advance Access published May 1, 2014 MAJOR ARTICLE Rapid Detection of Hepatitis B Virus in Blood Plasma by a Specific and Sensitive Loop- Mediated Isothermal Amplification Assay Dougbeh-Chris Nyan,1 Laura E. Ulitzky,1 Nicoleta Cehan,1 Phillip Williamson,2 Valerie Winkelman,2 Maria Rios,1 and Deborah R. Taylor1 1 Laboratory of Emerging …

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  • (PDF) Rapid Detection of Hepatitis B Virus in Blood Plasma ...

    Description: Hepatitis B PCR Quantitative Blood Test. This test is used to look for the presence of Hepatitis B (Hep B) viral genetic material in the blood. The results for this test are quantitative, meaning they provide a numerical result rather than a simple positive or negative.Because Viral DNA is often detectable sooner than antibodies developed in response to an infection, Hep B PCR ...

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  • Hepatitis B PCR Blood Test - Request A Test

    2021-7-9 · Hepatitis B virus (HBV) infects more than 300 million people worldwide and is a common cause of liver disease and liver cancer. HBV, a member of the Hepadnaviridae family, is a small DNA virus with unusual features similar to retroviruses. HBV replicates through an RNA intermediate and can integrate into the host genome.

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  • Hepatitis B: The Virus and Disease

    How many new HBV infections occur annually in the United States? In 2018, a total of 3,322 cases of acute hepatitis B were reported to CDC, for an overall incidence rate of 1.0 cases per 100,000 population ().After adjusting for under-ascertainment and under-reporting, an estimated 21,600 acute hepatitis B cases occurred in 2018 ().Has the rate of new HBV infections in the United …

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  • Hepatitis B Questions and Answers for Health Professionals ...

    2020-9-25 · Antibody Test —An antibody test can take 23 to 90 days to detect HIV infection after an exposure. Most rapid tests and self-tests are antibody tests. In general, antibody tests that use blood from a vein detect HIV sooner after infection than tests done with blood from a …

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  • HIV Testing Overview | HIV.gov

    A point-of-care test is also available. The OraQuick ® HCV Rapid Antibody Test is an FDA-approved test that can be performed with a fingerstick (or venous blood draw). It is also a CLIA-waived test and therefore can be used in clinic offices and outreach facilities. Results are reported as reactive or nonreactive within 20 minutes.

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  • Rapid and Accurate Genotyping of YMDD Motif Variants in ...

    By using the “flow-through hybridization” principle, we developed a new, rapid and accurate reverse dot blot (RDB) method to detect lamivudine resistance-associated YMDD motif variants in hepatitis B virus (HBV) genome. The improved RDB method was very fast at simultaneously detecting HBV YMDD wild-type and mutant motifs.

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  • HIV Testing Overview | HIV.gov

    2020-9-25 · Antibody Test —An antibody test can take 23 to 90 days to detect HIV infection after an exposure. Most rapid tests and self-tests are antibody tests. In general, antibody tests that use blood from a vein detect HIV sooner after infection than tests done with blood from a …

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  • Simple Detection of Hepatitis B Virus in Using Loop ...

    2019-1-23 · Hepatitis B is a major global public health concern because it can cause chronic infection and puts people at high risk of death from cirrhosis and liver cancer. It is caused by the infection of hepatitis B virus (HBV), a circular, partially double-stranded DNA virus of 3.2 kb.

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  • Recent Advances in Biosensor Development for Foodborne ...

    2017-7-5 · Nanomaterials can be used to detect hepatitis A, B, and E foodborne viruses. Nanomaterials of gold nanorods can be used to visualize virus replication and detect virus particles [ 46 , 61 ]. This is used to detect hepatitis B viruses to increase surface area and immobilisation of single-stranded DNA with electrochemical biosensor [ 47 ].

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  • Rapikit Gold Standard Rapid test kits I Nectar ...

    Rapikit is the high quality rapid test kits manufacturing division of Nectar Lifesciences (Neclife). Leaders in HIV, HCV, Hbsag, HCG, Malaria tests, Syphillis and many others. Preferred OEM and Private label manufacturer for rapid tests globally.

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  • Nucleic Acid-Based Approaches for Detection of Viral

    2014-12-10 · To determining suitable nucleic acid diagnostics for individual viral hepatitis agent, an extensive search using related keywords was done in major medical library and data were collected, categorized, and summarized in different sections.Various types of molecular biology tools can be used to detect and quantify viral genomic elements and analyze the sequences.

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  • Hepatitis B Vaccination and Prevention. Immunisation info ...

    2015-6-5 · The standard course of immunisation involves three injections at 0, 1 and 6 months. An accelerated course of 0, 1 and 2 months is possible - also for combined hepatitis A and B vaccines. Adults who need protection very quickly (eg, within 48 hours of exposure) can …

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  • New, easy-to-perform test can rapidly detect widely ...

    2019-9-2 · HEPATITIS B Hepatitis B is a viral liver inflammation, mainly transmitted via contaminated blood and blood products (blood transfusion, contaminated needles, open wounds), or via sexual contact. The incubation period is 6 weeks to …

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  • Rapid Detection of Hepatitis B Virus in Blood Plasma by a ...

    2014-4-4 · Hepatitis B virus (HBV) is an important blood-borne pathogen that causes hepatic inflammation and can lead to liver cirrhosis and hepatocellular carcinoma. Conventional methods of HBV detection are time consuming and require highly trained personnel and elaborate equipment.

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  • NOVEMBER 2016 GUIDELINES ON HEPATITIS B AND C

    2016-11-14 · Guidelines on hepatitis B and C testing - Policy brief ... rapid diagnostic test [RDT]) to detect HBsAg and HCV antibody. RDTs used should meet minimum performance standards, and be delivered at the point of care to improve ... and HCV transmission and prevent new infections.

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  • Understanding Your Test Results - Hepatitis B Foundation

    The hepatitis B blood test requires only one sample of blood and your health care provider should order the “Hepatitis B Panel,” which includes three parts. You and your health care provider will need to know all three test results in order to fully understand whether you are infected, protected or still at risk for a hepatitis B infection.

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  • Hepatitis B Foundation: Hepatitis B Diagnosis

    2018-10-8 · The Multispot HIV-1/HIV-2 Rapid Test is a single use qualitative immunoassay to detect and differentiate circulating antibodies to Human Immunodeficiency Virus Types 1 …

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  • Multispot HIV-1/HIV-2 Rapid Test - FDA

    2019-3-19 · REVIEW Antiviral-resistant hepatitis B virus: can we prevent this monster from growing? F. Zoulim,1,2,3 M. Buti4 and A. S. Lok5 1INSERM, U871, 69003 Lyon, France; 2Universite´ Lyon 1, IFR62 Lyon-Est, 69008 Lyon, France; 3Hospices Civils de Lyon, Hoˆtel Dieu, Department of Liver Diseases, 69002 Lyon, France; 4Hospital General Universitario Valle de Hebron, Barcelona, …

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  • REVIEW Antiviral-resistant hepatitis B virus: can we ...

    Introduction. Hepatitis B virus (HBV) is the most common, chronic viral infection globally. Approximately two billion people worldwide are affected and about 350 million have active chronic HBV infection [1, 2].In highly endemic areas such as East and Southeast Asia, sub‐Saharan Africa, and parts of South America, over 8% of the population are chronic carriers of HBV []. 80% of …

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  • Rapid Disease Tests & Rapid Test Kits You Can Trust | Quidel

    QUIZ 3-6003-KEY QUESTION 1 Researchers applied a new rapid screening test to detect Hepatitis C in a group of injection drug users. It is known that the prevalence of Hepatitis C in this group is 25%. The sensitivity and specificity of the screening test is found to be 95% and 88% respectively. Researchers use the screening test in a low risk group of college students who are thought to …

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  • Performance evaluation of 70 hepatitis B virus (HBV ...

    2021-3-10 · In new research, he and his colleagues show how these nanoparticles could play a key role in a simple blood test to detect acute liver damage earlier than current methods. advertisement

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  • By: Dr. Shahzamani From: Digestive Disease Research Center ...

    2018-9-17 · AMPLICOR HCV test, version 2.0 RT PCR Roche 50 Evidence of active infection& response to therapy VERSANT HCV RNA qualitative assay TMA Bayer 5 -DO-Ampliscreen HCV TEST, Version 2.0 RT-PCR Roche < 50 Blood Screening Quantitative AMPLICOR HCV MONITOR, Version 2.0 RT-PCR Roche 600 Determination of viral load and length of therapy VERSANT HCV NA

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  • Rapid Diagnosis of Coronavirus by RNA-Directed RNA ...

    2021-3-12 · The RdRps from hepatitis C virus (HCV), bovine viral diarrhea virus (BVDV), and GB virus-B all can initiate RNA synthesis by a de novo mechanism. We used RNAs and GTP analogs, resp., to examine the use of the T1 nucleotide and the initiation nucleotide (NTPi) during de novo initiation of RNA synthesis.

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  • Serum levels of preS antigen (HBpreSAg) in chronic ...

    2007-9-24 · Hepatitis B virus (HBV) infection is a serious health problem worldwide. Treatment recommendation and response are mainly indicated by viral load, e antigen (HBeAg) seroconversion, and ALT levels. The S antigen (HBsAg) seroconversion is much less frequent. Since HBeAg can be negative in the presence of high viral replication, preS antigen (HBpreSAg) might …

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  • A systematic review of hepatitis B virus (HBV) drug and ...

    2018-8-6 · Author summary The Global Hepatitis Health Sector Strategy is aiming for the elimination of viral hepatitis as a public health threat by 2030. However, mutations associated with drug resistance and vaccine escape may reduce the success of existing treatment and prevention strategies. In the current literature, the prevalence, distribution and impact of hepatitis B virus …

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  • How qPCR Changed Infectious Disease Detection

    2021-5-5 · How qPCR Changed Infectious Disease Detection. Making qPCR molecular diagnostics accessible at point-of-care changed how we detect and treat major infectious diseases. Zihua Wang, MBA., PhD, Diane Stewart, PhD. Infectious diseases have always been a part of human life and their impacts are a major driver of our history.

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  • In vitro expression of precore proteins of hepatitis B ...

    2021-4-14 · HBeAg, a non-particulate protein of hepatitis B virus (HBV), is translated from the precore/core region as a precursor, which is post-translationally …

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  • Quiz 3 Key.docx - QUIZ 3-6003-KEY QUESTION 1

    QUIZ 3-6003-KEY QUESTION 1 Researchers applied a new rapid screening test to detect Hepatitis C in a group of injection drug users. It is known that the prevalence of Hepatitis C in this group is 25%. The sensitivity and specificity of the screening test is found to be 95% and 88% respectively. Researchers use the screening test in a low risk group of college students who are thought to …

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  • Researchers develop world's most sensitive test to detect ...

    2015-7-6 · Researchers develop world's most sensitive test to detect infectious disease, superbugs Date: July 6, 2015 Source: McMaster University Summary: Infectious diseases such as hepatitis …

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  • chapter 9 Flashcards | Quizlet

    A new, rapid diagnostic test to detect human papilloma virus (HPV) DNA before cancer develops is done without microscopic exam. The steps involved in this FastHPV test are listed below. What is the second step? A) Add enzyme substrate. B) Lyse human cells. C) The order is unimportant. D) Add an RNA probe for HPV DNA.

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  • Microbiology Chapter 9 Flashcards | Quizlet

    A new, rapid diagnostic test to detect human papilloma virus (HPV) DNA before cancer develops is done without microscopic exam. The steps involved in this FastHPV test are listed below. What is the second step? A) Add an RNA probe for HPV DNA. B) Lyse human cells. C) Add enzyme-linked antibodies against DNA-RNA. D) Add enzyme substrate.

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