“This runaway is quite unexpected”: scientists overtaken by the virus

He caught everyone off guard, even them. Suddenly and abruptly, the epidemic runaway of October, the pivot of government panic and hospital turmoil, disconcerted even … Read more

Covid-19: what does the new distinction between “positive” and “weak positive” correspond to in the result of PCR tests?

Question asked on 10/08/2020 Hello, The analysis of the results of RT-PCR tests that measure the viral load of Sars-CoV-2 in a patient has been … Read more

Anti-Covid treatments: what is Trump the guinea pig of?

It was in a triumphant tweet that Trump announced his discharge from hospital on Monday evening. “I feel really good! Don’t be afraid of the … Read more

Covid-19: do antibodies disappear over time?

Question asked by Céline on 09/09/2020 Hello, You ask us whether it is true that former infected people can present a negative serological test. We … Read more

Positive but not contagious: the blind spot of PCR tests

Is being positive for Covid-19 necessarily synonymous with contagiousness? Or, on the contrary, does this correlation, which is more complex than it appears, necessitate refining … Read more

Covid-19: the big test socket

Long lagging behind in this area, France has crossed the symbolic bar of one million weekly RT-PCR tests in recent days for research of Sars-CoV-2, … Read more

Covid-19: what do we know today about the transmission of the virus by aerosols in confined spaces?

Question asked by BARALE on 08/22/2020 Hello, The start of the school year is masked, In the enterprises as in classrooms. Before these decisions were … Read more

“There is no reason for schools to become reservoirs for viruses”

School, reservoir for viruses: chiseled by seasonal epidemics of influenza and gastroenteritis, the image dies hard. Except with the Sars-CoV-2, the rule suffers exception. According … Read more

Covid-19: “maybe a vaccine in the first quarter of 2021”

The French government has set up a vaccine committee to advise it on current projects. Between changes and political issues, its president, Marie-Paule Kieny, research … Read more