David A Henry, Mark A Jones, Paulina Stehlik and Paul P Glasziou
Med J Aust 2022; 216 (8): . || doi: 10.5694/mja2.51479
Published online: 2 May 2022

To the Editor : We recently reviewed the first studies of the real‐world effectiveness of coronavirus disease 2019 (COVID‐19) vaccines. 1 We found evidence of protection against serious illness and death but noted the difficulties in performing such studies in Australia. This was because of the (then) low national case numbers and lack of ready access to the necessary linked health data.

  • David A Henry 1 , 2
  • Mark A Jones 1 , 3
  • Paulina Stehlik 1 , 2
  • Paul P Glasziou 1

  • 1 Institute for Evidence‐Based Healthcare, Bond University, Gold Coast, QLD
  • 2 Gold Coast Hospital and Health Service, Gold Coast, QLD
  • 3 University of Queensland, Brisbane, QLD


Competing interests:

No relevant disclosures.


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