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HCQ study #1 of 230
2/11 Late treatment study
Xia et al., ChiCTR2000029741 (Preprint)
Efficacy of Chloroquine and Lopinavir/ Ritonavir in mild/general novel coronavirus (CoVID-19) infections: a prospective, open-label, multicenter randomized controlled clinical study
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Early results from a very small trial, reported within the application for a later trial. Very minimal details are provided, but we include this as the earliest published results. For COVID-19 patients with pneumonia the viral negative conversion rate was 50% (5/10) with CQ versus 20% (3/15) with lopinavir/ritonavir.

Xia et al., 2/11/2020, retrospective, China, Asia, preprint, 1 author.
risk of no virological cure, 37.5% lower, RR 0.62, p = 0.17, treatment 5 of 10 (50.0%), control 12 of 15 (80.0%).
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