“…Incidence of febrile seizures and vaccine related febrile seizures was similar or lower within 0-28/42 days or 7-10 days after second MMRV vaccine dose than that after first MMRV vaccine dose in most studies [27][28][29]35,37,40,[44][45][46]48,50]. Ten RCTs [27,30,33,35,36,40,48,50] were included in the meta-analysis to analyze the incidence of febrile seizure and vaccine related febrile seizure within 0-28/42 days or 7-10 days after second MMRV vaccine dose in healthy children aged 9-24 months (Table 2), one or even zero febrile seizure or vaccine related febrile seizure was reported after the second dose in each group in these studies (Table 1).…”