Severe acute respiratory syndrome coronavirus 2 (SARS CoV-2) detection pitfalls

نویسندگان

چکیده

The Severe Acute Respiratory Syndrome (CoVID 19) provoked by Coronavirus 2 (SARS CoV 2) require science-based responses. aim of this work is to assess pitfalls found during the search viral genomes due sampling timing, swabbing, storage, heat-infectivity inactivation and further sample processing. According several meta-analysis, on day symptom onset, median false-negative rate estimated be 38% decreased 20% 8 (3 days after onset) then increased 66% 21 suggesting that rRT-PCRs adds little information immediately exposure. RNA isolation from samples requires cautious handling using RNase-free solutions, pipet tips glassware. rRT PCR detection limits are between 39 779 copies/mL but 3000 20.000 copies/ml for antigen test. External cross contamination imperceptible splatting risk management integrating Pharmacopoeias processing at least 10 negative contiguous positive controls in each sennries 100 tests. . For Ct >34 it was suggested no transmissible disease. antibodies one month or later clinical signs may confirm positivity. Lack immune response non-immune compromised asymptomatic people invalidate False disrupts efficiency containing infections leads societal anxiety undermining health workforce. Because spurious methods create confusion, step diagnosis quality-control assessment, knowing PCRs amplify more than 10.000 million times signal 1 element

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ژورنال

عنوان ژورنال: International Journal of Science and Research Archive

سال: 2021

ISSN: ['2582-8185']

DOI: https://doi.org/10.30574/ijsra.2021.2.2.0049