TABLE 4.

RR for MAARI 0 to 14 and 15 to 42 Days After LAIV-T

Vaccine YearAge GroupsPrevaccination Rate (Reference) Per 10 000 Child-DaysRR Postvaccination/ Prevaccination Period (95% CI)
0–14 D Postvaccination15–42 D Postvaccination
1 (1998–1999)18 mo–4 y68.50.85 (0.61–1.19)0.86 (0.62–1.16)
5–9 y35.50.74 (0.50–1.09)0.97 (0.71–1.33)
10–18 y21.41.04 (0.64–1.67)1.10 (0.72–1.68)
2 (1999–2000)18 mo–4 y94.20.72 (0.54–0.96)1.03 (0.80–1.33)
5–9 y45.91.18 (0.89–1.58)1.09 (0.81–1.45)
10–18 y25.50.88 (0.59–1.33)1.20 (0.84–1.70)
3 (2000–2001)18 mo–4 y104.60.72 (0.53–0.99)1.02 (0.72–1.44)
5–9 y54.20.73 (0.52–1.02)0.71 (0.49–1.05)
10–18 y29.30.73 (0.47–1.13)0.97 (0.59–1.59)
4 (2001–2002)18 mo–4 y69.40.82 (0.55–1.24)0.70 (0.45–1.09)
5–9 y50.10.62 (0.40–0.98)0.82 (0.53–1.27)
10–18 y15.61.22 (0.67–2.24)1.26 (0.67–2.37)
  • Boldface indicates a significant decrease in health care utilization.