Durable Spike-Specific T Cell Responses after Different COVID-19 Vaccination Regimens Are Not Further Enhanced by Booster Vaccination

Scientists reported on T cell immunity four weeks and six months after different vaccination regimens and four weeks after an additional booster vaccination, in comparison to SARS-CoV-2 T-cell responses in convalescents and prepandemic donors using interferon-gamma ELISpot assays and flow cytometry.