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2022-10-4 23:38:54

Kakuya F, Okubo H, Fujiyasu H, Kurisawa MJ, Kinebu. Clinical effectiveness of baloxavir marboxil against influenza in three seasons. Pediatr Int. 2022 Jan;64(1):e15169.
submited by kickingbird at Jul, 7, 2022 14:14 PM from Pediatr Int. 2022 Jan;64(1):e15169.

Background: Previous reports have not clarified the difference in clinical efficacy between baloxavir and oseltamivir against influenza.

Methods: A prospective observational study was performed during 2017-2018, 2018-2019, and 2019-2020 influenza seasons. The primary endpoint of this study was to compare the duration of fever between patients who received baloxavir and those who received oseltamivir.

Results: A total of 235 influenza-infected patients (3-18 years of age), including 91 who received oseltamivir and 144 who received baloxavir, were enrolled. The proportions of influenza A(H3N2) virus, influenza A(H1N1)pdm09 virus, and influenza B virus-infected patients were 31.5%, 42.6%, and 26.0%, respectively. Patients who received oseltamivir were significantly younger than those who received baloxavir. Univariate analyses showed that the duration of fever was shorter with baloxavir than with oseltamivir against influenza virus overall, influenza A virus, influenza B virus, and influenza A(H1N1)pdm09 virus, but not for influenza A(H3N2) virus. In multivariate analyses, hazard ratios for influenza virus overall (0.53 [95% CI, 0.38-0.73]), influenza B virus (0.16 [95% CI, 0.07-0.41]), and influenza A(H1N1)pdm09 virus (0.55 [95% CI, 0.32-0.93]) were significantly lower in the patients who received baloxavir than those who received oseltamivir. However, the differences between influenza A virus and influenza A(H3N2) virus were not significant between the two groups.

Conclusion: For influenza virus overall, influenza B virus, and influenza A(H1N1)pdm09 virus, baloxavir treatment resulted in shorter duration of fever than oseltamivir treatment, but not for influenza A virus and influenza A(H3N2) virus.

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