It’s official: I am spouting misinformation about the Covid vaccines. Full Fact – the Google, Facebook and George Soros-funded outfit that Ofcom has said it relies on to tell it what to censor regarding COVID-19 – has ‘fact checked‘ my recent piece on PHE data showing negative vaccine effectiveness in August and branded it “incorrect”.
Writer Leo Benedictus – henceforth to be known as the Oracle – takes particular issue with the headline, which he says “falsely claims that a report from Public Health England (PHE) shows the COVID-19 vaccines having ‘negative effectiveness’ in the over-40s”.
“This is not true about the COVID-19 vaccines – nor is it true that the PHE report shows this,” the Oracle declares. Except it is. The data contained in the report is completely clear, and the calculation of unadjusted vaccine effectiveness from that data is straightforward.
According to the Oracle, however, this is not a valid way of estimating vaccine effectiveness. Benedictus quotes the PHE report stating as much – “The vaccination status of cases, inpatients and deaths is not the most appropriate method to assess vaccine effectiveness and there is a high risk of misinterpretation” – and notes that I too quote this. What he fails to acknowledge, though, is that I also examine the reason PHE gives for this claim and counter it.
The only substantive reason PHE gives that vaccine effectiveness might be underestimated in its data is that “vaccination has been prioritised in individuals who are more susceptible or more at risk of severe disease”. In other words, the high-risk are over-represented in the vaccinated and this skews the sample. I countered that the large majority of the older age groups are now vaccinated so this bias should be very much reduced. Of course, we also need to ask why, if this is supposedly the key confounder of the data presented, we are not also provided with the necessary data on risk categories so that it can be duly quantified and accounted for.
Benedictus reiterates PHE’s claim that vaccine effectiveness should only be estimated via the published studies. However, as I noted in my article, these studies are riddled with serious problems and inconsistencies that bring their findings into question. They are also out of date since they don’t cover the Delta surge, which is the first time the vaccines have really been stress-tested in the U.K.
Benedictus spends half the ‘fact check’ in a bizarre attempt to argue that my vaccine effectiveness calculation is wrong because I used the data PHE itself used for the size of the unvaccinated population. He points out it is different to the ONS figures on this. Er, take that one up with PHE, Leo.
It does seem at times that Benedictus is fact-checking the PHE report rather than my article. At one point he takes the report to task because one of its charts sowed confusion as it “seemed to show for the month in question (August 9th to September 5th) that people in their 40s, 50s, 60s and 70s were more likely to test positive for Covid if they had been vaccinated than if they hadn’t”.
Except the chart didn’t ‘seem’ to show that; it did show that. Again though we are told that this data does “not give a reliable estimate of vaccine effectiveness” because of biases in the samples.
Vaccine Effectiveness Drops Further in the Over-40s, To as Low as Minus 53%, New PHE Report Shows – And That’s a FactRead More