I believe the summary is misleading. It states, "30% effective in preventing infection, during the time when the virus strains dominant". But the chart clearly shows that not getting the jab is even more effective. Perhaps the authors though this was the only way they could get this published. You can find the chart at the end of the report.
Source: https://www.medrxiv.org/content/10.1101/2022.12.17.22283625v1.full.pdf
How does your title match what the document is saying?
I believe the summary is misleading. It states, "30% effective in preventing infection, during the time when the virus strains dominant". But the chart clearly shows that not getting the jab is even more effective. Perhaps the authors though this was the only way they could get this published. You can find the chart at the end of the report.
Yeah I was trying to make sense out of it. I will look at it closer after work.