Hydroxychloroquine fails to protect ICU staff from coronavirus

Malaria drug hydroxychloroquine failed to protect healthcare workers caring for COVID-19 patients from becoming infected themselves, according to a US placebo-controlled trial.
The 1483 participants worked in EDs, ICUs and other high-risk sites in the US and the Canadian province of Manitoba.
They were randomly assigned to receive hydroxychloroquine 400mg once weekly or twice weekly for 12 weeks, or a placebo, according to the study in Clinical Infectious Diseases.
Compared to the risk of infection in the placebo group, the risk was 28% lower with once-weekly hydroxychloroquine and 26% lower with twice-weekly dosing. But those differences were not deemed to be statistically significant.