Table 2.

Vaccination Status of Subjects

	Case Subjects n = 71 (%)	Controls n = 140 (%)	P value
Varicella vaccine			<.001
0 doses	5 (7.0)	1 (0.7)
1 dose	66 (93.0)	117 (83.6)
2 doses	0 (0.0)	22 (15.7)
Months since dose 1			.151
Mean ± SD	103.2 ± 24.1	97.4 ± 28.2
Median	106	101
Range	35–139	17–161
Months since dose 2			N/A
Mean ± SD	–	14.8 ± 13.3
Median	–	12
Range	–	0–50
Received MMRa>1 dose	71 (100.0)	139 (99.3)	1.000
Received MMR 2 doses	70 (98.6)	137 (97.9)	1.000

NOTE. ^a MMR, Measles, mumps, and rubella vaccine; N/A, not applicable.