Table 11. Varicella Antibody Persistence Rates and GMTs for Subjects Who Seroconverted 6 Weeks after Vaccination.

	MMR II + varicella vaccine co-administered		MMR II + varicella vaccine given 6 weeks apart
	Persistence rate %	GMT (95% CI)	Persistence rate %	GMT (95% CI)
1 year	100	35.3	98.2	25.7
	(143/143)	(28.4-44.0)	(109/111)	(20.0-33.0)
3 years	98.8	40.0	99.1	36.8
	(82/83)	(28.7-55.9)	(112/113)	(27.4-49.3)
4 years	99.0	34.4	100	29.1
	(95/96)	(25.6-46.4)	(76/76)	(20.1-42.3)
5 years	100	49.5	100	40.2
	(91/91)	(35.5-69.0)	(77/77)	(27.9-57.9)
6 years	100	42.9	98.6	31.3
	(91/91)	(31.9-57.7)	(70/71)	(20.9-46.8)

Source: Shinefield HR et al. Vaccination with measles, mumps and rubella vaccine and varicella vaccine: safety, tolerability, immunogenicity, persistence of antibody and duration of protection against varicella in healthy children. Pediatr Infect Dis J. 2002; 21: 555–61