scholarly journals MicroFLOQ® Direct: A Helpful Tool for the Coronavirus SARS-Cov-2 Rapid Detection without RNA Purification

2022 ◽  
Vol 13 (01) ◽  
Author(s):  
Mathilde Recipon ◽  
Amaury Pussiau ◽  
Sébastien Follot ◽  
Noussair Latifa ◽  
Jean-Louis Herrmann ◽  
...  
Keyword(s):  
Rapid Detection ◽  
Helpful Tool ◽  
Rna Purification

scholarly journals microFLOQ® Direct: a helpful tool for the coronavirus SARS-CoV-2 rapid detection without RNA purification

2020 ◽  
Author(s):  
Mathilde Recipon ◽  
Amaury Pussiau ◽  
Sébastien Follot ◽  
Noussair Latifa ◽  
Jean-Louis Herrmann ◽  
...  
Keyword(s):  
Rapid Detection ◽  
Virus Disease ◽  
Sampling Procedure ◽  
Molecular Diagnostic ◽  
Diagnostic Tools ◽  
Pcr Analysis ◽  
Infected People ◽  
Bacterial Diseases ◽  
Transport Medium ◽  
Rna Purification

Abstract In the context of SARS-Cov-2 virus disease (COVID-19) pandemic, molecular diagnostic tools were rapidly developed as there are fundamental for a rapid detection of infected people. In this context, and in order to optimize the manipulations and reduce the time to get results, we report the successful use of a sampling tool for COVID-19 diagnosis named microFLOQ® Direct (MFD). Hundred upper respiratory specimens sampled from patients with potential COVID-19 were evaluated using MFD, and results were compared to the results obtained by standard sampling procedure using dry swabs and physiologic serum as the transport medium. MFD results compared to results issued from the classic RNA purification and amplification steps from transport medium showed that MFD can be directly used for RT-PCR analysis without the preliminary inactivation and extraction steps. So, MFD could limit handling errors compared to the different treatment steps with dry swabs and transport medium. It therefore limits the risk of contamination, simplify the analytical process and enables to get results in less than 2 hours. We also show that the MFD kit is operational as a screening tool in the field of molecular detection of viral and bacterial diseases during an outbreak and then it can be used for public health or agro-veterinary purposes.

Search mode for rapid detection of virus particles

1991 ◽  
Vol 49 ◽  
pp. 286-287
Author(s):  
O. E. Bradfute
Keyword(s):  
Electron Microscopy ◽  
Rapid Detection ◽  
Plant Virus ◽  
Low Dose ◽  
Search Mode ◽  
Virus Diseases ◽  
Virus Particles ◽  
Focus Image ◽  
Time Required ◽  
Rapid Switching

Electron microscopy is frequently used in preliminary diagnosis of plant virus diseases by surveying negatively stained preparations of crude extracts of leaf samples. A major limitation of this method is the time required to survey grids when the concentration of virus particles (VPs) is low. A rapid survey of grids for VPs is reported here; the method employs a low magnification, out-of-focus Search Mode similar to that used for low dose electron microscopy of radiation sensitive specimens. A higher magnification, in-focus Confirm Mode is used to photograph or confirm the detection of VPs. Setting up the Search Mode by obtaining an out-of-focus image of the specimen in diffraction (K. H. Downing and W. Chiu, private communications) and pre-aligning the image in Search Mode with the image in Confirm Mode facilitates rapid switching between Modes.

Identification of hepatitis a virus in cell cultures by solid phase immune electron microscopy

1986 ◽  
Vol 44 ◽  
pp. 238-239
Author(s):  
C.D. Humphrey ◽  
T.L. Cromeans ◽  
E.H. Cook ◽  
D.W. Bradley
Keyword(s):  
Electron Microscopy ◽  
Liquid Phase ◽  
Cell Cultures ◽  
Rapid Detection ◽  
Hepatitis A ◽  
Hepatitis A Virus ◽  
Solid Phase ◽  
Immune Electron Microscopy ◽  
Detection And Identification

There is a variety of methods available for the rapid detection and identification of viruses by electron microscopy as described in several reviews. The predominant techniques are classified as direct electron microscopy (DEM), immune electron microscopy (IEM), liquid phase immune electron microscopy (LPIEM) and solid phase immune electron microscopy (SPIEM). Each technique has inherent strengths and weaknesses. However, in recent years, the most progress for identifying viruses has been realized by the utilization of SPIEM.

Rapid detection of Rotavirus antigen in stool sample of acute diarrheic children

2012 ◽  
Vol 6 (1) ◽  
pp. 11-13
Author(s):  
Sushmita Roy ◽  
S.M. Shamsuzzaman ◽  
K.Z. Mamun
Keyword(s):  
Stool Sample ◽  
Rapid Detection ◽  
Cross Sectional Study ◽  
Rapid Diagnosis ◽  
Age Group ◽  
College Hospital ◽  
Cross Sectional ◽  
Rotavirus Infection ◽  
Medical College ◽  
Stool Samples

Rotavirus is one of the leading causes of pediatric diarrhea globally. Accurate and rapid diagnosis of Rotavirus diarrhea should reduce unnecessary use of antibiotics and ultimately reduce drug resistance. Study was designed for rapid diagnosis of Rotavirus antigen in stool sample by ICT (Immunochromatographic test) as well as to observe the seasonal variation of rotavirus infection. This cross sectional study was carried out in the department of Microbiology, Dhaka Medical College from January 2011 to December 2011. Eighty stool samples were collected from Dhaka Shishu Hospital and Dhaka Medical College Hospital. All samples were tested for rotavirus antigen by ICT. Among 80 patients, 42 (52.5%) samples were positive for rotavirus antigen. Among these 42 positive samples, 30 (71.43%) were from 0-12 months of age group, 10 (23.81%) from 13 to 24 months of age group and rest 2 (4.76%) from 25 to 36 months of age group. Rotavirus Ag was detected in stool samples from January to April and another peak episode from October to December. Considering the importance of Rotavirus associated diarrhea, rapid detection of Rotavirus infection in human is substantially needed and should be routinely practiced.DOI: http://dx.doi.org/10.3329/bjmm.v6i1.19354 Bangladesh J Med Microbiol 2012; 06(01): 11-13

Rapid detection of Chlamydia/Chlamydophila group in samples collected from swine herds with and without reproductive disorders

2014 ◽  
Vol 17 (2) ◽  
pp. 367-369 ◽  
Author(s):  
K. Rypula ◽  
A. Kumala ◽  
P. Lis ◽  
K. Niemczuk ◽  
K. Płoneczka-Janeczko ◽  
...  
Keyword(s):  
Real Time ◽  
Real Time Pcr ◽  
Rapid Detection ◽  
Complement Fixation Test ◽  
Complement Fixation ◽  
Fixation Test ◽  
Reproductive Disorders ◽  
Serum Samples ◽  
Swine Herds

Abstract The study was carried out in seven reproductive herds of pigs. In three of them reproductive disorders were observed. Three herds consisted of 10-50 and four consisted of 120-500 adult sows and they were called small and medium, respectively. Fifty-seven adult sows were randomly selected from herds. Serum samples were tested using the complement fixation test and swabs from both eyes and from the vaginal vestibule were examined using real-time PCR. All serum samples were negative. Infected sows were present in each of the study herds. In total, there were 28 positive samples (53%, 28/48) in real-time PCR in sows with reproductive disorders and 35 (53%, 35/66) in sows selected from herds without problems in reproduction. One isolate proved to be Chlamydophila pecorum, whereas all the remaining were Chamydia suis

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