This all started on Monday when CEO Pascal saw Rio said that it's vaccination could be asshole I as 90% effective, but the only problem is that 90% figure relates to a small portion of the trial.

For the majority of candidates, the number was 62%.

To confuse things further, the University of Oxford, which is partnering with AstraZeneca, lead with a 70% figure, which was an average of the 90% and the 62% combined.

It's understandable why Sorry oh would have led with a higher number.

Over the past few weeks, Madonna and Pfizer have said that their vaccinations are as high as 95% effective.

But the problem with muddying up the communication on this is that it undermines public confidence in vaccinations at a time when people are very fearful with how fast these vaccinations have been created.

Over the past week, Astra Zeneca shares have fallen and investors are watching closely.

And as the world prepares to take billions of doses of vaccinations.

Fumbling over your communication is the last place of drug giant wants to be.