Study registration: *
Publication de Gier B, medRxiv, 2021
Dates: 2021-01-06 to 2021-08-29
Funding: Public/non profit (Dutch Ministry of Health, Welfare and Sports)
Conflict of interest: no COI (The authors have declared no competing interest.)

Methods

Study design:Cohort
Description of participants: Adolescents and adults in the Netherlands
Inclusion criteria:
  • Hospitalised from 4 July 2021 to 29 August 2021
  • positive SARS-CoV-2 test

Exclusion criteria:
  • could not be linked to a valid social services number.

Follow-up duration (months): 7.87
Vaccines:
  • ttt
  • ttt
  • ttt
  • ttt
  • ttt
Variant description :
Variant name: Delta
Evidence: Direct evidence (effectiveness determined by sequencing cases)
Documents
available

Protocol

NR

Statistical plan

NR

Data-sharing stated: No
Data accessibility: Brechje de Gier: brechje.de.gier@rivm.nl
General comment Concerns over the lack of adjustment for important confounders, and no pre-defined statistical plan is available.