>> How effective is the Oxford vaccine?

>> There are three figures doing the rounds - 62%, 70% and 90%. The first analysis of the trial data showed 70% of people were protected from developing Covid-19 and nobody developed severe disease or needed hospital treatment.

>> The figure was just 62% when people were given two full doses of the jab and 90% when they were first given a half dose and then a full one.

>> The Medicines and Healthcare products Regulatory Agency (MHRA) has approved two full doses of the Oxford-AstraZeneca vaccine.

>> However, unpublished data suggests that leaving a longer gap between the first and second doses increases the overall effectiveness of the jab.

This description of the results doesn’t inspire confidence.