Chronic treatment with hydroxychloroquine and SARS-CoV-2 infection

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  • A Ferreira, MD PhD
  • A Oliveira-e-Silva, MD
  • P Bettencourt, MD PhD
Journal Journal of Medical Virology
Date July 9, 2020

Retrospective analysis of patients with systemic lupus erythematosus, rheumatoid arthritis and other autoimmune disorders showed that patients receiving hydroxychloroquine had an odds ratio of COVID-19 of 0.51 (CI 0.37-0.70) compared to patients with autoimmune diseases who were receiving other therapeutics.

This analysis suggests a prophylactic effect of hydroxychloroquine against COVID-19.

Of note, hydroxychloroquine was not shown to be entirely protective against COVID-19 as 5.96% of patients receiving chronic treatment with hydroxychloroquine still became infected with novel-coronavirus compared to the 7.45% infection incidence in patients not receiving hydroxychloroquine.

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This is another retrospective analysis that suggests a prophylactic effect of hydroxychloroquine against COVID-19.

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