Abstract：
:Diagnostic tests are usually evaluated in terms of simple qualitative measures of sensitivity and specificity. When comparing different quantitative assays such as ELISAs, it is often more useful to deal with actual values (sample optical density/cut-off optical density ratio (OD ratio] rather than the qualitative relationship to the cut-off, i.e. positive or negative. This allows for a statistical approach to the questions of sensitivity and specificity. The National HIV Reference Laboratory of Australia has developed an approach for determining statistical estimates of sensitivity and specificity in terms of delta (delta). Delta is defined as the distance of the mean OD ratio of the sample population from the cut-off measured in standard deviation units. This paper discusses the derivation of this measurement and its usefulness when evaluating ELISA tests.
journal_name
J Virol Methodsjournal_title
Journal of virological methodsauthors
Crofts N,Maskill W,Gust IDdoi
10.1016/0166-0934(88)90087-0subject
Has Abstractpub_date
1988-10-01 00:00:00pages
51-9issue
1eissn
0166-0934issn
1879-0984pii
0166-0934(88)90087-0journal_volume
22pub_type
杂志文章abstract：:Tomato necrotic stunt virus (ToNStV) is an emerging potyvirus that causes severe stunting to infected tomato plants. A reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay was developed for sensitive detection of ToNStV. The sensitivity of RT-LAMP was comparable to that of conventional RT-PCR, ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2014.01.017
更新日期：2014-05-01 00:00:00
abstract：:Nipah virus, a zoonotic paramyxovirus which emerged recently was chemically inactivated using binary ethylenimine (BEI). The inactivated virus was concentrated and purified by sucrose gradient centrifugation. The gradient fractions were examined by electron microscopy and Western immunoblot, and gradient fraction cont...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2005.09.005
更新日期：2006-03-01 00:00:00
abstract：:Live and inactivated preparations of foot-and-mouth disease virus strains 01 BFS 1860 and A22 IRQ 24/64 were freeze-dried in the presence or absence of additive solutions and assessed for their reactivity by ELISA at intervals over a six month storage period at various temperatures and also after reconstitution and su...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(90)90019-c
更新日期：1990-11-01 00:00:00
abstract：:Bovine leukemia virus (BLV) is widely distributed in U.S. cattle herds. It infects B lymphocytes and causes neoplastic disease in 5-10% of infected animals. Direct economic losses are incurred as a result of death, reduced milk production and condemnation at slaughter. Thus the identification of cattle infected with B...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(91)90009-o
更新日期：1991-06-01 00:00:00
abstract：:A method is described for detecting enteroviruses in both freshwater and marine sediments. Viruses were recovered from sediments by elution into 6% beef extract at pH 9.0 and concentration with polyethylene glycol 6000. The recovery efficiency ranged from 6 to 55% for marine sediments and 16 to 77% for freshwater sedi...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(85)90101-6
更新日期：1985-02-01 00:00:00
abstract：:Borna disease virus in naturally infected horses, a donkey and sheep was detected for the first time by amplification of viral RNA using PCR. In contrast to a control group of healthy horses, brain tissue was positive by this assay in all animals with neurological symptoms. The use of a second round of PCR with nested...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(94)90098-1
更新日期：1994-02-01 00:00:00
abstract：:The introduction of digital cameras has led to the publication of numerous virus electron micrographs of low magnification, poor contrast, and low resolution. Described herein is the methodology for obtaining highly contrasted virus images in the magnification range of approximately 250,000-300,000x. Based on recent a...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2009.03.004
更新日期：2009-07-01 00:00:00
abstract：:Simian betaretroviruses (formerly Type D retroviruses; SRV) are a group of closely related retroviruses for which the natural host species are Asian monkeys of the genus Macaca. Five serotypes have been identified by classical neutralization assays and three additional untyped variants have been reported (SRV(Tsukuba)...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2009.07.030
更新日期：2009-12-01 00:00:00
abstract：:We developed a non-radioisotopic (non-RI) reverse transcriptase assay (RTA). The reverse transcriptase (RT) incorporates biotin-11-deoxyuridine-triphosphate (bio-dUTP) using a poly(rA) template hybridized with oligo(dT) primer that is immobilized on the surface of a 96-well microtiter plate. This assay is thus semi-au...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(92)90063-j
更新日期：1992-11-01 00:00:00
abstract：:High-titered phage stocks are required for carrying out genetic and physicochemical studies on bacteriophages. This study describes a simple method for the concentration of coliphages MS-2 and T2 by charge-modified filters. Phage lysates were first clarified by filtration through serum-coated membrane filters. The cla...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(80)90016-6
更新日期：1980-01-01 00:00:00
abstract：:A viral entry assay where a beta-lactamase reporter protein fused to the influenza matrix protein-1 (BlaM1) is packaged as a structural component into influenza virus-like particles (VLPs) is described. The Bla reporter is released upon fusion with target cells and can be detected in live cells by flow cytometry, micr...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2009.10.020
更新日期：2010-02-01 00:00:00
abstract：:The objective of this study was to assess the impact of highly active antiretroviral therapy (HAART) by an oral route on the peripheral blood CD8 subset in the monkeys infected persistently with a pathogenic strain, SHIV(89.6P). Two rhesus macaques were inoculated intravenously with SHIV(89.6P), then treated with the ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(03)00201-5
更新日期：2003-09-01 00:00:00
abstract：:A detailed growth and purification scheme suitable for producing relatively large quantities of fully active, pure SV40 is presented together with data on recovery and purity at each step of the procedure. The scheme was designed to prevent the initial binding of virus to cell components as well as contamination of th...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(81)90051-3
更新日期：1981-10-01 00:00:00
abstract：:An enzyme-immunoassay (EIA) for antibodies to hepatitis B core antigen (anti-HBc) was developed. The new test uses undiluted samples, incubated directly into an HBcAg coated well. Three alternative test procedures are possible. The stability of reagents was studied and a preclinical evaluation was performed intramural...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(87)90072-3
更新日期：1987-08-01 00:00:00
abstract：:Dengue remains a global public health threat and development of a safe and effective vaccine is a principal public health goal. The primary correlate of immunity is thought to be neutralizing antibodies. Currently, the plaque reduction neutralization test (PRNT) is the gold standard measure of dengue neutralizing anti...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2005.12.002
更新日期：2006-06-01 00:00:00
abstract：:It remains unclear whether hepatitis B virus (HBV) replicates in extrahepatic tissues, and particularly in peripheral blood mononuclear cells (PBMCs), which may serve as a reservoir for the maintenance of infection. A real-time PCR assay for the quantitation of total and covalently closed circular (ccc) HBV DNA in ser...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2006.07.019
更新日期：2006-12-01 00:00:00
abstract：:Multiple studies have examined the use of oral fluids in modified serum-based assays aiming to replace serum in antibody detection for hepatitis A. However, the reliable detection of HAV immunity in oral fluid requires an extremely sensitive assay; most immunoassays designed for serum antibody determination lack suffi...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2011.01.014
更新日期：2011-05-01 00:00:00
abstract：:The availability of whole genome sequencing has contributed to many aspects of dengue research, and its use in dengue virus (DENV) surveillance for early epidemic warning has been proposed. Methods to sequence the genomes of individual dengue serotypes have been described previously, but no single method is known to b...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2010.06.013
更新日期：2010-10-01 00:00:00
abstract：:Adeno-associated virus (AAV) is a small single-stranded DNA member of the family Parvoviradae with at least eight recognized human serotypes, several of which are being studied as candidate vectors for gene therapy. When multiple serotypes are handled in the same laboratory, it is critical to know the serotype of a sa...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2006.05.012
更新日期：2006-09-01 00:00:00
abstract：:Puumala virus, a hantavirus belonging to the Bunyaviridae family, causes a human disease known as nephropathia epidemica, a mild form of hemorrhagic fever with renal syndrome. The implementation of effective decontamination procedures is critical in hantavirus research to minimize the risk of personnel exposure. This ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2006.11.037
更新日期：2007-04-01 00:00:00
abstract：:Vascular puncture inoculation (VPI) is an effective technique for transmission of maize viruses without using arthropods or other biological vectors. It involves using a jeweler's engraving tool to push minuten pins through a droplet of virus inoculum toward the major vascular bundle in the scutellum of germinating ke...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(01)00369-x
更新日期：2001-11-01 00:00:00
abstract：:Lily symptomless virus (LSV) occurs frequently in many Lilium species worldwide and often causes developmental abnormalities such as a smaller flower and lower bulb yield. In this study, two moderate and efficient gel filtration chromatography (GFC) methods was compared, these two techniques were, respectively, based ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2006.09.008
更新日期：2007-02-01 00:00:00
abstract：:A lateral flow device (LFD) for the detection of swine vesicular disease (SVD) virus (SVDV) and differential diagnosis from foot-and-mouth disease (FMD) was developed using a monoclonal antibody (Mab C70). The performance of the LFD was evaluated in the laboratory on suspensions of vesicular epithelia and cell culture...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2009.09.023
更新日期：2010-02-01 00:00:00
abstract：:The recent emergence of novel viruses requires reliable methodology for their identification and confirmation both on a cellular and molecular level. Mass spectrometry offers a suitable approach for the identification and characterisation of viral proteins and its application is demonstrated in this study. Menangle vi...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(01)00441-4
更新日期：2002-04-01 00:00:00
abstract：:To test the hypothesis that many viruses remain to be discovered in plants, a procedure was developed to sequence nucleic acids cloned randomly from virus-like particle fractions of plant homogenates. As a test of the efficiency of the procedure we targeted Ambrosia psilostachya, western ragweed, plants growing at the...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2008.05.030
更新日期：2008-09-01 00:00:00
abstract：:A large number of Norwalk-like viruses (NLVs) have been identified from stool samples by RT-PCR by amplifying part of the polymerase-coding gene. A set of probes were selected based on sequence analysis of the viruses circulating in Finland during the years 1996-97 for confirmation of the findings by hybridization. A ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(99)00115-9
更新日期：1999-12-01 00:00:00
abstract：:Three tests were compared to diagnose herpes virus infection: electron microscopy (EM), viral culture (VC) and cytodiagnosis (Tzanck smear). The study comprised 67 patients with skin or mucous membrane lesions suggestive of herpes simplex virus (HSV) infection. The sensitivity of EM increased 25% after virus concentra...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(91)90106-a
更新日期：1991-10-01 00:00:00
abstract：:The technique of gold-labelled immunosorbent electron microscopy for the initial screening of monoclonal antibodies 10 days after cell fusion from 96-well culture plates is described. The technique is used to identify clones that secrete antibodies binding on the surface of the virion or to viral subunits, and compare...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(88)90118-8
更新日期：1988-12-01 00:00:00
abstract：:The suitability of autoclaved tap water for the preparation of ELISA reagents and washing buffer was compared with that of ultrapure water, in a standard indirect ELISA for the detection of antibodies to pseudorabies virus (PRV). The performance of the assay, using autoclaved tap water (AT-ELISA) compared favourably t...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(94)90110-4
更新日期：1994-02-01 00:00:00
abstract：:Quantitative PCR (qPCR) assay using TaqMan™ probe was widely used in the detection of different nucleic acids. However, this technology has several drawbacks, including false negative results caused by primer-dimer (PD) and false positive issues due to primer-probe aggregations. Here, we designed a modified TaqMan™-Mo...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2018.01.008
更新日期：2018-04-01 00:00:00
