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Mr Roberts said: “The latest data from the UK Health Security Agency shows that, for the over-75 population, we are seeing around 500 deaths a week in people who are are fully vaccinated, because we know that the vaccine is very effective against serious illness and death, but not completely effective.”
The old-school method of developing vaccines means you must go back to the raw materials and start from scratch for every vaccine you make. It is like starting with a bench of flour, sugar, eggs and butter. The next step is to take the offending virus, or other disease-causing microbes, and either kill it or weaken it to make a vaccine.
The UKHSA said about 400,000 samples had been processed by the privately-run lab and it estimated 43,000 people may have been given incorrect negative test results, with 4,000 of those from Wales. Some may also be in the south-east of England and scattered across the country.