Adenovirus vaccine vectors, such as the ChAdOx1 nCov-19 construct which has risen to prominence as a major vaccine for COVID-19, may generate robust long-term immune system responses, according to scientists from the Universities of Oxford and the Cantonal Hospital St.Gallen, Switzerland.

Writing in the journal Nature Immunology, they detail an investigation into one of the key features of adenovirus vaccines—their ability to generate strong and sustained populations of the 'killer' T-cell element of the immune system.

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