Table 1.

Respiratory syncytial virus reinfection risk

Ref.	Year	n	Reinfection risk
Henderson et al[39]	1979	78	74% by age 2 if infected in 1st year of age
Glezen et al[40]	1986	125	76% by 24 mo age if infected before 12 mo age
Hall et al[15]	1991	15	50% at first challenge with RSV 2 mo after initial infection
Kawasaki et al[16]	2004	165	25% within a year of first RSV infection

n: Total cohort of subjects studied; RSV: Respiratory syncytial virus.