Strong peak immunogenicity but rapid antibody waning following third vaccine dose in older residents of care homes

Third-dose coronavirus disease 2019 vaccines are being deployed widely but their efficacy has not been assessed adequately in vulnerable older people who exhibit suboptimal responses after primary vaccination series. This observational study, which was carried out by the VIVALDI study based in England, looked at spike-specific immune responses in 341 staff and residents in long-term care facilities who received an mRNA vaccine following dual primary series vaccination with BNT162b2 or ChAdOx1. Third-dose vaccination strongly increased antibody responses with preferential relative enhancement in older people and was required to elicit neutralization of Omicron. Cellular immune responses were also enhanced with strong cross-reactive recognition of Omicron. However, antibody titers fell 21–78% within 100 d after vaccine and 27% of participants developed a breakthrough Omicron infection. These findings reveal strong immunogenicity of a third vaccine in one of the most vulnerable population groups and endorse an approach for widespread delivery across this population. Ongoing assessment will be required to determine the stability of immune protection

The European Genome-phenome Archive of human data consented for biomedical research

The European Genome-phenome Archive (EGA) is a permanent archive that promotes the distribution and sharing of genetic and phenotypic data consented for specific approved uses but not fully open, public distribution. The EGA follows strict protocols for information management, data storage, security and dissemination. Authorized access to the data is managed in partnership with the data-providing organizations. The EGA includes major reference data collections for human genetics research.The EGA has received support from the European Molecular Biology Laboratory, the European Union ELIXIR Technical Feasibility Study, the Wellcome Trust (grant WT 085475/C/08/Z), the UK Medical Research Council (grant G0800681), the Spanish Instituto de Salud Carlos III Instituto Nacional de Bioinformática (grant PT13/0001/0026), the Spanish Ministerio de Economía y Competitividad (MINECO) and Centro de Excelencia Severo Ochoa (grant SEV-2012-0208), the Fundació La Caixa and the Barcelona Supercomputing Centre. The research leading to these results has received funding from the European Community's Seventh Framework Programme (FP7/2007-2013 under grant agreements 211601–ELIXIR, 200754–GEN2PHEN, 262055–ESGI, 242006–BASIS, 261376–IHMS and 305444–RD-CONNECT)

Neutralising antibodies after COVID-19 vaccination in UK haemodialysis patients.

No abstract available