Hydroxychloroquine Post-Exposure Prophylaxis for Coronavirus Disease (COVID-19) Among Health-Care Workers

Ghanem-Zoubi et al., NCT04438837, NCT04438837, Jun 2022

HCQ for COVID-19

1st treatment shown to reduce risk in March 2020, now with p < 0.0000000001 from 426 studies, used in 59 countries.

No treatment is 100% effective.
Protocols combine treatments.

Estimated 582 participant HCQ prophylaxis RCT with results not reported over 4 years after estimated completion.
37 HCQ RCTs have results missing long after expected1-37
The trials report a total of 20,499 patients, with 12 trials having actual enrollment of 3,639, and the remainder estimated.
Ghanem-Zoubi et al., 30 Jun 2022, Randomized Controlled Trial, trial NCT04438837 (history). Contact: n_ghanem@rambam.health.gov.il.