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Retraction Note: Safety and efficacy of favipiravir versus hydroxychloroquine in management of COVID-19: A randomised controlled trial

The Original Article was published on 31 March 2021

Retraction of: Scientific Reports, published online 31 March 2021

The Editors have retracted this Article.

After concerns were brought to the Editors' attention after publication, the raw data underlying the study were requested. The authors provided several versions of their dataset. Post-publication peer review confirmed that none of these versions fully recapitulates the results presented in the cohort background comparisons, casting doubt on the reliability of the data. Additional concerns were raised about the randomisation procedure, as the equal distribution of male and female patients is unlikely unless sex is a parameter considered during randomisation. However, based on the clarification provided by the authors, sex was not considered during this process. The Editors therefore no longer have confidence in the results and conclusions presented.

Hany M. Dabbous, Manal H. El-Sayed, Gihan El Assal, Hesham Elghazaly, Fatma F. S. Ebeid, Ahmed F. Sherief, Maha Elgaafary, Ehab Fawzy, Sahar M. Hassany, and Ahmed R. Riad disagree with the retraction. Mohamed A. TagelDin did not respond to the correspondence from the Editors about the retraction.

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Correspondence to Hany M. Dabbous.

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Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit

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Dabbous, H.M., El‑Sayed, M.H., El Assal, G. et al. Retraction Note: Safety and efficacy of favipiravir versus hydroxychloroquine in management of COVID-19: A randomised controlled trial. Sci Rep 11, 18983 (2021).

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