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

Author(s): Patel MK, Bergeri I, Bresee JS, Cowling BJ, Crowcroft NS, Fahmy K, Hirve S, Kang G, Katz MA, Lanata CF, L'Azou Jackson M, Joshi S, Lipsitch M, Mwenda JM, Nogareda F, Orenstein WA, Ortiz JR, Pebody R, Schrag SJ, Smith PG, Srikantiah P, Subissi L, Valenciano M, Vaughn DW, Verani JR, Wilder-Smith A, Feikin DRJournal: VaccinePMID: 34119350 June 2021
Phase 3 randomized-controlled trials have provided promising results of COVID-19 vaccine efficacy, ranging from 50 to 95% against symptomatic disease…

Reply to Hasford and to Spinola et al.

Author(s): Eyal N, Lipsitch M, Smith PGJournal: J Infect DisPMID: 32845306 August 2020
We proposed human challenge trials (HCTs) as a possible alternative or complement to conventional phase 3 trials for expedited severe…

Response to Cioffi.

Author(s): Eyal N, Lipsitch M, Smith PGJournal: J Infect DisPMID: 32348499 June 2020
Dr Cioffi rails against our comparison of human challenge studies to organ donation, but the risk of donor death from…

Response to Dawson et al.

Author(s): Eyal N, Lipsitch M, Smith PGJournal: J Infect DisPMID: 32495823 June 2020
Dawson et al raise three concerns about human challenge trials to assess the efficacy of SARS-CoV-2 vaccines. First, that current…