Effectiveness of BNT162b2 COVID-19 vaccination in prevention of hospitalisations and severe disease in adults with SARS-CoV-2 Delta (B.1.617.2) and Omicron (B.1.1.529) variant between June 2021 and July 2022: A prospective test negative case-control study.

We found no evidence of a significant trend in VE against hospitalisation with respect to patients’ age ( Table 2 ), which we examined further in the context of an adjusted logistic regression by including additional interaction terms between vaccine and age, and found no evidence that there is a decrease in VE with increasing age ( Supplementary Table S7 ).

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