Date	Event	Description
28 June 2016	New search has been performed	A search of the Cochrane Cystic Fibrosis and Genetic Disorders Group's Cystic Fibrosis Trials Register did not identify any new references potentially eligible for inclusion in this review. The format of the plain language summary has been updated.
28 June 2016	New citation required but conclusions have not changed	Since no new data have been added to this review, our conclusions remain the same.
12 May 2014	New citation required but conclusions have not changed	No new information has been added to this review, hence our conclusions remain the same. One author (Naomi McKoy) has stepped down from the review team.
12 May 2014	New search has been performed	A search of the Cystic Fibrosis and Genetic Disorders Review Group's Trials Register did not identify any new references which were eligible for inclusion in this review.
17 April 2013	New citation required but conclusions have not changed	Despite the inclusion of additional data from the only included trial in this review, the authors' conclusions have not changed.
17 April 2013	New search has been performed	A search of the Group's Cystic Fibrosis Register did not identify any new references for this review. However, we obtained data from the sponsor of the only eligible trial and have included these data in the current update of this review.
9 November 2010	New search has been performed	A search of the Group's CF Trials Register did not identify any new references for inclusion in this review. We have revised the section 'Implications for research' with updated sample size calculations for a required randomized controlled trial based on rates of hospitalizations due to any respiratory cause and specifically due to RSV infection. We have also done separate calculations using estimates from the one included randomized control trial and an observational study.