Table 1.
Subjects included and excluded by coordinating site.
Table 2.
RT-PCR results at each site overall and in patients 18–64 and ≥65 years of age.
Figure 1.
Number of admissions by epidemiological week at each site.
The number of patients enrolled and included in the IVE analysis is shown by epidemiological week at each site for each influenza strain.
Table 3.
Characteristics of patients included in the IVE analysis by RT-PCR result.
Table 4.
Characteristics of patients included in the IVE analysis according to vaccination the current year (2012–2013).
Table 5.
Characteristics of patients included in the IVE analysis at each site.
Table 6.
Pooled IVE in hospitalized patients swabbed within 7 days of symptom onset.
Figure 2.
Heterogeneity of IVE estimates at each site overall.
Figure 3.
Heterogeneity of IVE estimates at each site for each age group.
Figure 4.
Heterogeneity of IVE estimates at each site for each strain.
Figure 5.
Heterogeneity of IVE estimates for each strain in patients 18–64 years of age.
Figure 6.
Heterogeneity of IVE estimates for each strain in patients ≥65 years of age.