Distribution and adjusted odds ratiosa,b for nasopharyngeal presence of the most common viruses, co-occurrence with each of the other respiratory viruses, bacteria and risk factors.

Abbreviations: aOR, adjusted odds ratio; CI, confidence interval; NA, not applicable (i.e., not included in the model for that particular virus or pooled group of viruses), RSV, respiratory syncytial virus.aAdjusted for age and all variables with a P value of bStatistically significant associations are shown in bold.