Funding statement:
Except Luxembourg, all the organisations involved have received funding
from the European Centre for Disease Prevention and Control (ECDC)
implementing Framework Contract ECDC/2021/018 ‘Vaccine effectiveness and
impact of COVID-19 vaccines through routinely collected exposure and
outcome using health registries’ (RS/2022/DTS/24104). Luxembourg
participated to the project with no contribution.
Conflict of interest: Authors declare no support from any
private organisation for the submitted work; no financial relationships
with any organisations that might have an interest in the submitted work
in the previous three years, no other relationships or activities that
could appear to have influenced the submitted work.
Authors’ contributions: The common protocol, including the
design of the statistical analysis, was elaborated by SM, IK, BN, AS,
JS, MV, AN and NN, with active contributions from all other authors. All
authors from institutions other than ISCIII and Epiconcept were in
charge of performing site VE estimations, while authors from ISCIII and
Epiconcept were in charge of pooling site estimates. IK and SM drafted
the first version of the manuscript. VEBIS-Lot 4 working group members
had supporting roles in study design and data management. All authors
contributed to the interpretation of results and critically reviewed and
approved the content of this manuscript.
VEBIS-Lot 4 working group: Bolette Søborg, Joris A.F. van
Loenhout, Ausenda Machado, Palle Valentiner-Branth, Carlos Dias, Pierre
Hubin, Itziar Casado, Aitziber Echeverría, Cristina Burgui, Amparo
Larrauri, Esther Kissling, Marine Maurel, Liliana Antunes, Matylde Diouf