Conclusion
Our study investigated for the first time the associations between
several personal factors and RSV and RV-specific immune levels in a
large population covering a wide age range. In children, older age,
female sex and lower BMI were associated with higher RV-specific IgG
levels, while no personal determinants were associated with RSV-specific
IgG levels. In adults, age (older age for RSV, younger age for RV),
active smoking and all seasons except summer were associated with higher
RSV and RV specific IgG levels. Additionally, female sex and lower BMI
were associated with higher RV specific IgG levels among adults. These
results suggest that personal determinants of respiratory IgG immune
responses might differ between children and adults and according to the
respiratory virus considered.