Relative efficacy of the three #covid19 #vaccine trials announced so far. Bars are estimated 95% confidence intervals calculated by Dr Jasper Morrow. AstraZeneca results shown as the two separate dosing regimes (high then high, low then high) and combined.

Numbers taken from companies' press releases and will be subject to amendment as regulatory filings and full datasets emerge. Interpret this figure at your own risk!

Also you can't just inspect the CIs to infer statistical significance between trials, because of multiple comparisons. Bear in mind the trials also have different case definitions, populations and durations.

Not to mention differences in manufacturing and distribution

Oh and declaration of interest: I am a participant in the AstraZeneca/ Oxford trial in the lo-hi group but am still blinded to whether I got active vaccine. I have no financial interest in any company involved!