The french Institut Pasteur has sent to preprint a genetic study which tends to show that the coronavirus was silently spreading in france in february, as as distinct branch from those in other auropen countries. This was sent to preprint before this other study was made public : https://www.sciencedirect.com/science/article/pii/S092485792... . In this paper, another team looked back at records of patient showing flu-like symptoms before the supposed start of outbreak in France. They discovered by PCR testing archived samples that one of these french patients was positive to SARS-Cov-2 in late december