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29 cze 2022 · Our data suggest that some persons who are infected with the omicron and delta SARS-CoV-2 variants shed culturable virus more than 5 days after symptom onset or an initial positive test. Julie ...
20 kwi 2022 · In the present study, we used cultured plaque-titered live Omicron, Delta, and WA1 viruses to assess differences in the LoDs with the BinaxNOW, CareStart, GenBody, and LumiraDx tests.
25 kwi 2024 · During November 2022–May 2023, among persons infected with SARS-CoV-2, sensitivity of rapid antigen tests was 47% compared with RT-PCR and 80% compared with viral culture. Antigen tests continue to detect potentially transmissible infection but miss many infections identified by positive RT-PCR test results.
21 gru 2021 · The Commission’s Joint Research Centre (JRC) has confirmed the validity of the Omicron-specific detection method it has developed. All laboratories carrying out PCR tests could use this new method to detect and identify Omicron without the need of an expensive and time-consuming sequencing.
31 paź 2024 · The ability of the three Ag-RDTs to detect the virus in PCR-positive, culture-negative samples also varied by assay. The C2Sense and Sofia tests detected 75% and 61.1%, respectively, and the Abbott test detected 25% of culture-negative samples .
10 paź 2022 · The most common COVID-19 symptoms among symptomatic people testing positive during the Omicron BA.1 period (cough, sore throat, and congestion) were also common among symptomatic people who tested negative (eFigure 1 in the Supplement).
1 sty 2023 · Antigen tests were predictive of viral culture positivity, with the LumiraDx microfluidics method showing enhanced sensitivity (90%; 95% CI 83–94%) compared with the BD Veritor (74%, 95% CI 65–81%), CareStart (74%, 95% CI 65–81%) and Oscar Corona (74%, 95% CI 65–82%) lateral flow antigen tests.
