Evaluation of Efficacity and Safety of Oseltamivir and Zanamivir

Summary

In order to prevent the high mortality due to an hypothetic pandemic caused by a newly emerging influenza A virus, antiviral drugs are seen as essential requirements for control of initial influenza outbreaks.Two antivirals are available for the treatment oseltamivir and zanamivir. Emergence of Oseltamivir resistance has been recently reported. . It appeared opportune to assess the efficacy and safety of biotherapy of neuraminidase inhibitors ,will be investigated by a randomized, placebo controlled, double blind study in France, during the next winter season . This study will be conducted in 300 centres of primary care with 900 adults with a virologically suspected influenza A infection. Individuals will be randomized to 1 of the 3 treatment groups: oseltamivir +zanamivir, or oseltamivir+placebo or placebo +zanamivir.The primary judgment criteria will be the proportion of patients with negative RT PCR negative in nasal secretions at Day 2.

Timeline

Start

2008-12

Primary completion

2009-11

Completion

2010-11

Publications

• Results Blanchon T, Mentre F, Charlois-Ou C, Dornic Q, Mosnier A, Bouscambert M, Carrat F, Duval X, Enouf V, Leport C; Bivir Study Group. Factors associated with clinical and virological response in patients treated with oseltamivir or zanamivir for influenza A during the 2008-2009 winter. Clin Microbiol Infect. 2013 Feb;19(2):196-203. doi: 10.1111/j.1469-0691.2011.03751.x. Epub 2012 Jan 20.
• Galimard JE, Chevret S, Curis E, Resche-Rigon M. Heckman imputation models for binary or continuous MNAR outcomes and MAR predictors. BMC Med Res Methodol. 2018 Aug 31;18(1):90. doi: 10.1186/s12874-018-0547-1.
• Flicoteaux R, Protopopescu C, Tibi A, Blanchon T, Werf SV, Duval X, Mosnier A, Charlois-Ou C, Lina B, Leport C, Chevret S. Factors associated with non-persistence to oral and inhaled antiviral therapies for seasonal influenza: a secondary analysis of a double-blind, multicentre, randomised clinical trial. BMJ Open. 2017 Jul 10;7(7):e014546. doi: 10.1136/bmjopen-2016-014546.
• Duval X, van der Werf S, Blanchon T, Mosnier A, Bouscambert-Duchamp M, Tibi A, Enouf V, Charlois-Ou C, Vincent C, Andreoletti L, Tubach F, Lina B, Mentre F, Leport C; Bivir Study Group. Efficacy of oseltamivir-zanamivir combination compared to each monotherapy for seasonal influenza: a randomized placebo-controlled trial. PLoS Med. 2010 Nov 2;7(11):e1000362. doi: 10.1371/journal.pmed.1000362.

Drugs

Indications