Analysis of factors affecting clinical feature and disease severity according to the subtypes of respiratory syncytial virus

ABSTRACT

Purpose@#Respiratory syncytial virus (RSV) is one of the most common causes of respiratory tract infections, especially in patients aged 39°C) was slightly higher in the RSV B group (13.6%) than in the RSV A group (11.7%), although the difference was not statistically significant. Laboratory findings, including the neutrophil-lymphocyte ratio, were similar between the groups. The incidence of systemic steroid therapy was higher in the RSV A group (12.6%) than in the RSV B (3.0%) group (P= 0.03). Patients aged < 12 months, the incidences of oxygen therapy (P= 0.03) and systemic steroid therapy (P= 0.04) were higher in the RSV A group, suggesting that patients aged < 12 months with RSV A infection may have clinically more severe disease. @*Conclusion@#We recommend intensive monitoring if RSV A infection is detected in young children under 12 months.