CBLIF and bacterial infectious disease: Invasive bacterial infection on culture = 75/3196 (2%); SP = 253/6612 (4%); Any virus identified = 6517/8393 (78%); >1 virus = 2760/8393 (33%); INF = 613/8394 (7%); INFB = 171/8394 (2%); EV = 877/8393 (10%); RV = 3115/8393 (37%); HMPV = 504/8393 (5%); PIV1 = 161/8392 (2%); PIV2 = 116/8392 (1%); PIV3 = 535/8392 (6%); PIV1-3 = 789/8393 (9%); RSV = 2216/8393 (26%); Any aetiology identified = 6635/8723 (76%).