Facebook, using a "USA Today" "Fact checking" service, greyed this artiucle out and claimed it's false. That is, there is a second rate US newspaper claiming what a qualified practicing doctor in Shanghai is saying, is in fact not true.
Other MD's in China have already complained about FB's fast and loose "fact checking" on this subject and asked them to "be more careful".
Worse, the USA Today "fact checking" artiucle included an ad for a "Tinnitus cure". I did my own fact checking and found there is no such thing as a Tinnitus cure.
So, a US newspaper had an error in it's error checking about a medical story and used that as an opportunity to try to hawk a fraudulent medical product.
Who watches the watchers?
The irony here is, Facebookuses USA Today to "fact check" where Vit. C is any use with Covid 19. USA Today claims the WHO sayds is not use. In actual fact the WHO and The Lancet suggest it is helpful.
2020 Who: "Other adjunctive interventions with biologic plausibility include Vitamin C"
https://www.who.int/blueprint/priority-diseases/key-action/Coronavirus_Roadmap_V9.pdf
2020 Matthay: The Lancet - "Rescue therapy with high-dose vitamin C can also be considered"
https://www.thelancet.com/action/showPdf?pii=S2213-2600(20)30127-2
Sunnybrook: when the World Health Organization (WHO) included vitamin C in its list of COVID-19 research priorities, Sunnybrook's LOVIT trial aims to find out if intravenous vitamin C help critically ill COVID-19 patients.
https://sunnybrook.ca/research/media/item.asp?c=2&i=2098&f=covid-19-LOVIT-trial
Addenda:
May 28, 2019: USA Today - "Video game addiction is officially considered a mental disorder, WHO says"
https://www.usatoday.com/story/tech/news/2019/05/28/who-officially-classifies-video-game-addiction-mental-disorder/1256352001/
March 28, 2020: USA Today - Video games can be a healthy social pastime during coronavirus pandemic
https://www.usatoday.com/story/tech/gaming/2020/03/28/video-games-whos-prescription-solace-during-coronavirus-pandemic/2932976001/