Table 2. Self-reported history of disease and vaccination and serology results for measles, mumps, rubella and varicella in paediatric healthcare workers, Denmark, 2019 (n = 555).

EIA result	Measles n = 361		Mumps n = 322		Rubella n = 342		Varicella n = 378
	n	%	n	%	n	%	n	%
HD+ , HV−
Positive	132	98.5	91	98.9	113	97.4	358	99.4
Negative	2	1.5	1	1.1	3	2.6	2	0.6
Total	134		92		116		360
HD−, HV+
Positive	163	85.3	141	78.3	169	89.9	2	100
Negative	28	14.7	39	21.7	19	10.1	0	0
Total	191		180		188		2
HD+ , HV+
Positive	28	96.6	23	95.8	29	93.5	7	77.8
Negative	1	3.4	1	4.2	2	6.5	2	22.2
Total	29		24		31		9
HD−, HV−
Positive	7	100	20	76.9	7	100	7	100
Negative	0	0	6	23.1	0	0	0	0
Total	7		26		7		7

EIA: enzyme Immunoassay; HD: history of disease; HV: history of vaccination.

Subjects who had unknown vaccination or disease history were excluded from analysis.