From the press release:Which part of the language where they say explicitly its 90% in this format makes you think its not 90%?
Professor Andrew Pollard, Chief Investigator of the Oxford Vaccine Trial at Oxford, said: “These findings show that we have an effective vaccine that will save many lives. Excitingly, we’ve found that one of our dosing regimens may be around 90% effective and if this dosing regime is used, more people could be vaccinated with planned vaccine supply. Today’s announcement is only possible thanks to the many volunteers in our trial, and the hard working and talented team of researchers based around the world.”
may be around 90%. Like mentioned previously, if everyone involved felt this would be the end result for efficacy they'd be talking about this only.
There's a distinct lack of confidence in this number from the people I know who are extremely close to the project. This should not be misunderstood to be a lack of confidence in the product, it's just that these things are highly sensitive in the commercial space and you are taught to temper your excitement.
I hope it is 90% effective, I suspect it's about 70% effective and I'm more than fine with that.