Expert Consensus on Chloroquine Phosphate for the Treatment of Novel Coronavirus Pneumonia

Jiang et al., Chin. J. Tuberc. Respir. Dis., 2020, 43, doi:10.3760/cma.j.issn.1001-0939.2020.0019, Feb 2020

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.

Early trials in China show CQ results in shorter hospital stays and improved patient outcomes.
Jiang et al., 20 Feb 2020, peer-reviewed, 1 author.
Late treatment
is less effective