Therefore, most of the CD14 studies focused more on the relationship of the polymorphisms in this gene with the development of asthma rather than severe RSV bronchiolitis.28, 29, 30, 31, 32 In this meta‐analysis, we collected four case–control studies on the association between CD14 C‐159T polymorphism and the development of severe RSV infection. This evidence concerns the gene CD14 and respiratory syncytial virus bronchiolitis.