Institut Pasteur is not the only research body in France regarding infectious diseases... They are directly linked to the Marseille University Hospital (AP-HM) and all the usual public research bodies like INSERM, CNRS.

If you want another source than connexion France, you have this article from Le Monde: https://www.lemonde.fr/sciences/article/2020/03/17/la-chloro...

Are you highly skeptical of Le Monde?