Table 9.

Risk of febrile seizures in children < 1 year old associated with respiratory viruses

Virus	95% vs 50% Incidence Risk	99% CI	P-value
Adenovirus	1.03	0.81, 1.30	0.79
hMPV	1.16	0.82, 1.64	0.27
Influenza A	1.13	0.81, 1.58	0.35
Influenza B	1.24	0.93, 1.67	0.054
Parainfluenza 1	1.15	0.73, 1.81	0.43
Parainfluenza 2	1.04	0.77, 1.40	0.73
Parainfluenza 3	0.89	0.61, 1.30	0.42
Picornavirus	0.84	0.64, 1.10	0.096
RSV	1.07	0.76, 1.51	0.63

Intercept denotes the estimated number of febrile seizures in this age group per month. The baseline monthly number of febrile seizures for this subgroup was 4.3