Measles-Rubella Positivity Rate and Associated Factors in Pre-Mass and Post-Mass Vaccination Periods: Analysis of Uganda Routine Surveillance Laboratory Data

Table 2

Factors associated with the measles outcome among laboratory-examined cases before and after the 2019 measles-rubella mass vaccination campaign.

Variable	Precampaign season (n = 1373)				Postcampaign season (n = 324)
	Positive	Negative	χ2	value	Positive	Negative	χ2	value
Sex
Male	297 (41.77)	414 (58.23)	0.010	0.934	68 (38.42)	109 (61.58)	0.030	0.853
Female	278 (41.99)	384 (58.01)			55 (37.41)	92 (62.59)
Age
UANE	82 (71.30)	33 (28.70)	58.94	0.001	32 (64.00)	18 (36.00)	51.91	<0.001
RICE	421 (37.39)	705 (62.61)			51 (23.94)	162 (76.06)
OANE	72 (54.55)	60 (45.45)			40 (65.57)	21 (34.43)
Place of residence
Urban	1 (100)	0 (0.00)		0.419	0 (0.00)	2 (100)		0.528
Rural	574 (41.84)	798 (58.16)			123 (38.20)	199 (61.80)
Vaccination status
Not vaccinated	336 (49.48)	343 (50.52)	60.48	<0.001	65 (48.87)	68 (51.13)	16.90	0.001
1 dose	152 (30.46)	347 (69.54)			26 (33.77)	51 (66.23)
2+ doses	16 (24.24)	50 (75.76)			12 (19.05)	51 (80.95)
Unknown	71 (55.04)	58 (44.96)			20 (39.22)	31 (60.78)
Vitamin A doses
1 dose	134 (36.71)	231 (63.29)	7.06	0.029	28 (41.18)	40 (58.82)	0.72	0.697
2+ doses	223 (45.79)	264 (54.21)			43 (35.25)	78 (64.75)
Unknown	218 (41.84)	303 (58.16)			52 (38.81)	82 (61.19)
Specimen condition
Good	575 (42.06)	792 (57.94)		0.078	122 (37.77)	201 (62.23)
Bad	0 (0.00)	5 (100)			0 (0.00)	0 (0.00)

Fisher’s exact test; not applicable.