Favipiravir in the treatment of patients with SARS-CoV-2 RNA recurrent positive after discharge: A multicenter, open-label, randomized trial
Hong Zhao, Chi Zhang, Qi Zhu, Xianxiang Chen, Guilin Chen, Wenjin Sun, Zuohan Xiao, Weijun Du, Jing Yao, Guojun Li, Yanhua Ji, Niuniu Li, Yujin Jiang, Ying Wang, Qingjin Zeng, Wei Li, Beilei Gong, Xianyou Chang, Feng Zhu, Xiufeng Jiang, Jiawen Li, Zhao Wu, Yingxia Liu, Peng Peng, Guiqiang Wang
International Immunopharmacology, doi:10.1016/j.intimp.2021.107702
Background: The clinical characteristics and treatment of patients who tested positive for COVID-19 after recovery remained elusive. Effective antiviral therapy is important for tackling these patients. We assessed the efficacy and safety of favipiravir for treating these patients. Methods: This is a multicenter, open-label, randomized controlled trial in SARS-CoV-2 RNA re-positive patients. Patients were randomly assigned in a 2:1 ratio to receive either favipiravir, in addition to standard care, or standard care alone. The primary outcome was time to achieve a consecutive twice (at intervals of more than 24 h) negative RT-PCR result for SARS-CoV-2 RNA in nasopharyngeal swab and sputum sample. Results: Between March 27 and May 9, 2020, 55 patients underwent randomization; 36 were assigned to the favipiravir group and 19 were assigned to the control group. Favipiravir group had a significantly shorter time from start of study treatment to negative nasopharyngeal swab and sputum than control group (median 17 vs. 26 days); hazard ratio 2.1 (95% CI [1.1-4.0], p = 0.038). The proportion of virus shedding in favipiravir group was higher than control group (80.6% [29/36] vs. 52.6% [10/19], p = 0.030, respectively). C-reactive protein decreased significantly after treatment in the favipiravir group (p = 0.016). The adverse events were generally mild and self-limiting. Conclusion: Favipiravir was safe and superior to control in shortening the duration of viral shedding in SARS-CoV-2 RNA recurrent positive after discharge. However, a larger scale and randomized, double-blind, placebocontrolled trial is required to confirm our conclusion.
consent form.
Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Appendix A. Supplementary material Supplementary data to this article can be found online at https://doi. org/10.1016/j.intimp.2021.107702.
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