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. Author manuscript; available in PMC: 2019 Mar 25.
Published in final edited form as: Vaccine. 2017 Feb 6;35(9):1335–1340. doi: 10.1016/j.vaccine.2017.01.017

Table 2.

Febrile seizures 7–10 days following MMR vaccination in children 2 years and younger.

Kaiser Permanente, Colorado
 Denver Health
Electronically identified Chart-reviewed Chart-confirmed Electronically identified Chart-reviewed Chart-confirmed
MMR doses 44,416 30,256
Febrile seizures 15 15 14 11 11 9
Events/10,000 doses (95% CI) 3.38 (2.04–5.60) 3.15 (1.87–5.32) 3.64 (2.01–6.56) 2.97 (1.55–5.72)

MMR - Measles, Mumps, and Rubella.