Study registration: *
Publication Nanduri S, MMWR, 2021
Dates: 2021-06-21 to 2021-08-01
Funding: Not reported/unclear
Conflict of interest: *

Methods

Study design:Cohort
Description of participants: Residents at 14,917 nursing homes in the USA
Inclusion criteria:
  • Nursing home residents

Exclusion criteria:
  • Data from facilities that did not report resident counts by vaccination status for the corresponding week 2 weeks earlier.

Follow-up duration (months): 1.33
Vaccines:
  • 2 doses of BNT162b2
  • 2 doses of mRNA-1273
  • 2 doses of either BNT162b2 or mRNA-1273
Variant description :
Variant name: Delta
Evidence: Indirect evidence (prevalence of variant in the population: ≥50%)
Documents
available

Protocol

NR

Statistical plan

NR

Data-sharing stated: NR
Data accessibility: Srinivas Nanduri, snanduri@cdc.gov.
General comment Concerns over the lack of adjustment for important confounders, time-changing vaccination status, potential exclusion of newly vaccinated people, missing data and not pre-defined statistical plan available.