Reference:
UK Health Security Agency. (2023). Estimation of number needed to vaccinate to prevent a COVID-19 hospitalisation for primary vaccination, booster vaccination (3rd dose), autumn 2022 and spring 2023 booster for those newly in a risk group. Retrieved from [URL]
Summary:
The UK Health Security Agency’s report outlines the calculation of the number needed to vaccinate (NNV) to prevent COVID-19 hospitalisations for various vaccination stages, including primary and booster doses, for those newly entering risk groups. Data from July 2022 was analysed, focusing on hospitalisation rates and vaccine effectiveness. Key findings include the effectiveness of vaccinations, particularly the increase from two doses to booster doses, notably in older adults and those in clinical risk groups. The calculations indicated significant age-related differences in NNV, with older groups requiring fewer vaccinations to prevent hospitalisations. The report underscores the importance of continued vaccination efforts, including autumn and spring boosters, to mitigate severe outcomes from COVID-19.