Research Article

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

Table 3

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

VariablePrecampaign season (n = 1367)Postcampaign season (n = 316)
PositiveNegativeχ2 valuePositiveNegativeχ2 value

Sex
Male157 (22.11)553 (77.89)0.120.71914 (7.95)162 (92.05)1.100.295
Female140 (21.31)517 (78.69)7 (5.00)133 (95.00)

Age
UANE4 (3.54)109 (96.46)<0.0010 (0.00)50 (100)0.058
RICE278 (24.84)841 (75.16)15 (7.21)193 (92.79)
OANE15 (11.11)120 (88.89)6 (10.34)52 (89.66)

Place of residence
Urban0 (0.00)1 (100)1.0000 (0.00)2 (100)1.000
Rural297 (21.74)1069 (78.26)21 (6.69)293 (93.31)

Vaccination status
Not vaccinated119 (17.68)554 (82.32)32.79<0.0013 (2.29)128 (97.71)0.001
1 dose140 (28.17)357 (71.83)11 (14.29)66 (85.71)
2+ doses23 (34.33)44 (65.67)1 (1.67)59 (98.33)
Unknown15 (11.54)115 (88.46)6 (12.50)42 (87.50)

Vitamin A doses
1 dose83 (22.99)278 (77.01)4.850.0899 (13.24)59 (86.76)6.600.037
2+ doses116 (24.12)365 (75.88)7 (6.09)108 (93.91)
Zero/unknown98 (18.67)427 (81.33)5 (3.76)128 (96.24)

Specimen condition
Good296 (21.75)1065 (78.25)1.00021 (6.65)295 (93.35)
Bad1 (20.00)4 (80.00)0 (0.00)0 (0.00)

Fisher’s exact test; not applicable.