TABLE 1

All Seizures After Measles-Containing Vaccines Identified From Electronic Records for 4- to 6-Year-Olds: 2000–2008

Post-Vaccination DaysMMRV, N=86 750 DosesMMR + Varicella, N=67 438 DosesMMR, N= 479 311 DosesVaricella, N= 80 985 Doses
Rate/10 000 Doses (Number Events)Rate/10 000 PY (95% CI)Rate/10 000 Doses (Number Events)Rate/10 000 PY (95% CI)Rate/10 000 Doses (Number Events)Rate/10 000 PY (95% CI)Rate/10 000 Doses (Number Events)Rate/10 000 PY (95% CI)
7–100.5 (4)42.1 (11.5–107.8)0 (0)0 (0–49.9)0.2 (9)17.1 (7.8–32.5)0 (0)0 (0–41.6)
0–422.2 (19)18.8 (11.3–29.4)1.5 (10)12.7 (6.1–23.4)2.1 (99)17.8 (14.4–21.6)0.7 (6)6.4 (2.3–13.9)