Do you think this implication is realistic: A French infectious disease expert publishes a paper which outlines the results of a small clinical trial and which

Do you think this implication is realistic: A French infectious disease expert publishes a paper which outlines the results of a small clinical trial and which is in agreement with anecdotal experiences in China, and with evidence gathered in vitro. The French authorities ignore their expert until Donald Trump posts about it on twitter, which they take as medical advice. That seems insulting to France, and also like complete fantasy. In fact I would go so far as to say it sounds like something somebody with an obvious agenda would say.