HCWs taking HCQ for prophylaxis are more likely to expose themselves to COVID-19
Effectiveness of Hydroxychloroquine as preexposure prophylaxis against COVID-19 is well established. The normal regimen is 1,000-2,000 mg over 3-5 days, followed by 200-400 mg weekly
In , the necessary concentration of HCQ metabolites was achieved only after 4 weeks. After that, the HCQ group had 80% lower rate of sickness than the control group.
HCWs can distinguish between placebo and HCQ. The same study notes that healthcare workers taking HCQ for prophylaxis are likely to take more risks of COVID-19 exposure than not taking it.
 Chatterjee P, Anand T, Singh KJ, Rasaily R, Singh R, Das S, Singh H, Praharaj I, Gangakhedkar RR, Bhargava B, Panda S. Healthcare workers & SARS-CoV-2 infection in India: A case-control investigation in the time of COVID-19. Indian J Med Res 2020;151:459-67. http://www.ijmr.org.in/text.asp?2020/151/5/459/285520
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