Evaluation of post-introduction COVID-19 vaccine effectiveness: Summary of interim guidance of the World Health Organization

Minal Patel, Isabel Bergeri, Joseph Bresee, Benjamin J. Cowling, Natasha S. Crowcroft, Kamal Fahmy, Siddhivinayak Hirve, Gagandeep Kang, Mark A. Katz, Claudio F. Lanata, Maïna L'Azou Jackson, Sudhir Joshi, Marc Lipsitch, Jason M. Mwenda, Francisco Nogareda, Walter A. Orenstein, Justin R. Ortiz, Richard Pebody, Stephanie J. Schrag, Peter G. Smith, Padmini Srikantiah, Lorenzo Subissi, Marta Valenciano, David W. Vaughn, Jennifer R. Verani, Annelies Wilder‐Smith, Daniel R. Feikin