id author title date pages extension mime words sentences flesch summary cache txt cord-353826-owoec2ud Graham, Simon P. Evaluation of the immunogenicity of prime-boost vaccination with the replication-deficient viral vectored COVID-19 vaccine candidate ChAdOx1 nCoV-19 2020-07-27 .txt text/plain 5496 269 53 Clinical development of the COVID-19 vaccine candidate ChAdOx1 nCoV-19, a replication-deficient simian adenoviral vector expressing the full-length SARS-CoV-2 spike (S) protein was initiated in April 2020 following non-human primate studies using a single immunisation. Analysis of SARS-CoV-2 S proteinspecific murine splenocyte responses by IFN-γ ELISpot assay showed no statistically significant difference between the primeonly and prime-boost vaccination regimens, in either strain of mouse (Fig. 1a) . SARS-CoV-2 S protein-specific antibody responses following ChAdOx1 nCoV-19 prime-only and prime-boost vaccination regimens in mice and pigs SARS-CoV-2 S protein-specific antibody titres in serum were determined by ELISA using recombinant soluble trimeric S (FL-S) and receptor binding domain (RBD) proteins. Small animal models have variable success in predicting vaccine efficacy in larger animals but are an important To analyse SARS-CoV-2 S-specific T cell responses, all mice were sacrificed on day 49 for isolation of splenocytes and pigs were blood sampled longitudinally to isolate PBMC. ./cache/cord-353826-owoec2ud.txt ./txt/cord-353826-owoec2ud.txt