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HCQ study #102 of 320   Meta Analysis
7/24 Pre-Exposure Prophylaxis study (treated before exposed to the virus)
Khurana et al., medRxiv, doi:10.1101/2020.07.21.20159301 (Preprint)
Prevalence and clinical correlates of COVID-19 outbreak among healthcare workers in a tertiary level hospital
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Study of hospital health care workers showing HCQ prophylaxis reduces COVID-19 significantly, OR 0.30, p=0.02. 94 positive health care workers with a matched sample of 87 testing negative. Full course prophylaxis was important in this study which used a low dose of 400mg/week HCQ (800mg for week 1), so it may take longer to reach therapeutic levels. Actual benefit of HCQ may be larger because severity of symptoms are not considered here but HCQ may also reduce severity.

Khurana et al., 7/24/2020, retrospective, India, South Asia, preprint, survey, 5 authors.
risk of COVID-19 case, 51.0% lower, RR 0.49, p = 0.02, treatment 6 of 22 (27.3%), control 88 of 159 (55.3%), odds ratio converted to relative risk.

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.
All 320 studies   Meta Analysis
Please send us corrections, updates, or comments. Vaccines and treatments are both extremely valuable and complementary. All practical, effective, and safe means should be used. Elimination of COVID-19 is a race against viral evolution. No treatment, vaccine, or intervention is 100% available and effective for all current and future variants. Denying the efficacy of any method increases the risk of COVID-19 becoming endemic; and increases mortality, morbidity, and collateral damage. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. Treatment protocols for physicians are available from the FLCCC.
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