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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.

3D illustration of white blood cell leukocyte

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. 

In an animal model, they observed that adenoviruses are able to get into long-lived tissue cells, known as fibroblastic reticular cells, which in turned formed small, well organised clusters, acting as ‘training grounds’ for these T-cells, appearing to explain how these vaccines sustain robust immune system responses.

Read the full story on the University of Oxford website.

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