This would be designed as a prospective observational cohort study of children (infants to 2 year olds) with common seasonal respiratory viral illnesses (RSV, enterovirus/rhinovirus, human metapneumovirus, parainfluenza, influenza). Those with severe bronchiolitis/pneumonia requiring hospitalizations would then be compared to those who receive care as outpatients. The analysis would include clustering based on genetic variants, microbiome composition, and phenotypic characteristics.
Idea No. 543