Paris-Sana
A new French study suggested that the Corona virus had spread in France since November 2019, even before its official appearance in China in December.
AFP quoted the authors of the study, whose results were published in the European Journal of Epidemiology, that these results suggest that the spread of the Covid 19 epidemic in Europe occurred before the time of its announcement.
Researchers from different countries confirmed in the past months that there were cases of Covid before December 2019 without anyone noticing them without providing conclusive evidence for that, noting that these researches are usually based on analysis of wastewater or blood samples. Subsequent analysis of blood samples and taking as a starting point 9144 blood samples from
Extensive "Constance" group studies that began in France in 2012 for epidemiological follow-up purposes.
