11/6 Post Exposure Prophylaxis study (treated after exposure to the virus)
et al., International Journal of Antimicrobial Agents, doi:10.1016/j.ijantimicag.2020.106224 (Peer Reviewed)
Post Exposure Prophylaxis with Hydroxychloroquine (HCQ) for the Prevention of COVID-19, a Myth or a Reality? The PEP-CQ Study
Post Exposure Prophylaxis with Hydroxychloroquine (HCQ) for the Prevention of COVID-19, a Myth or a Reality? The PEP-CQ Study
41% reduction in cases with HCQ PEP. Prospective open label trial with 132 HCQ patients and 185 control patients showing RR 0.59, p=0.03. 50% reduction in PCR+ cases, 44% reduction in symptomatic cases. No serious adverse events. Relatively low dosage, the PEP group received HCQ 800mg on day one followed by 400mg once weekly for 3 weeks. NCT04408456.
Dhibar et al., 11/6/2020, prospective, India, South Asia, peer-reviewed, 13 authors.
risk of COVID-19 case, 41.0% lower, RR 0.59, p = 0.03, treatment 14 of 132 (10.6%), control 36 of 185 (19.5%), adjusted per study.
risk of COVID-19 case, 50.0% lower, RR 0.50, p = 0.04, treatment 10 of 132 (7.6%), control 28 of 185 (15.1%), adjusted per study, PCR+.
risk of symptomatic case, 43.9% lower, RR 0.56, p = 0.21, treatment 6 of 132 (4.5%), control 15 of 185 (8.1%), adjusted per study.
Effect extraction follows pre-specified rules
prioritizing more serious outcomes. For an individual study the most serious
outcome may have a smaller number of events and lower statistical signficance,
however this provides the strongest evidence for the most serious outcomes
when combining the results of many trials.
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