Tag: RT-PCR
Evidence for diurnal variation in the proportion of positive PCR coronavirus tests, with a peak around 2pm
We tested the hypothesis that the proportion of positive SARS-CoV-2 real-time polymerase chain reaction (RT-PCR) tests varied by time of day, suggesting variation in viral shedding by time of day. More...
Evidence of early circulation of Sars-CoV-2 in France
Using serum samples routinely collected in 9144 adults from a French general population-based cohort, we identified 353 participants with a positive anti-SARS-CoV-2 IgG test, among whom 13 were sampled between November 2019 and January 2020 and were confirmed by neutralizing antibodies testing. More...
Persistence and Evolution of SARS-CoV-2 in an immunocompromised host
A 154 day Covid infection, with possible multiple different infections. More...