Fig. 2

TREC counts in neonatal screening cards in infants who later test positive for Respiratory syncytial virus (RSV), compared to infants who do not. Note: Values shown are mean neonatal TREC copies with 95% confidence interval in neonatal dried blood spot filter cards for 85 RSV positive patients and 47 controls. Panel a: infants later testing positive for RSV have significantly higher TREC counts compared to controls. Panel b: no significant difference was found between the disease severity subgroups. On post-hoc testing, mild and severe disease subgroups, but not the moderate subgroup, were significantly different to controls. *Post-hoc comparison of each disease subgroup to control, using Dunnett’s test