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Table 2 National serosurvey estimates of measles immunity amongst young adults (born 1968–1982) in Victoria before (1996–9) and after (2002) the young adult measles immunisation program by laboratory

From: Residual susceptibility to measles among young adults in Victoria, Australia following a national targeted measles-mumps-rubella vaccination campaign

 

1996–9 serosurvey*

2002 serosurvey

Laboratory

Samples tested

Percent of all samples tested (%)

Percent measles protected by laboratory (%)

Samples tested

Percent of all samples tested (%)

Percent measles protected by laboratory (%)

Change in percent protected (%)

p-value for change

VIDRL**

45

12.2

88.1

111

34.0

80.5

-7.65

0.2

Lab 2

68

18.4

90.4

46

14.1

80.6

-9.78

0.2

Lab 3

55

14.9

90.1

66

20.2

88.5

-1.62

0.6

Lab 4

40

10.8

86.7

16

4.9

96.9

10.16

0.3

Lab 5

43

11.6

95.7

38

11.7

83.3

-12.41

0.2

Other labs

118

32.0

91.2

5

1.5

80.0

-11.2

0.5

Total

369

100

91.0

282

100

84.2

-6.80

0.006

  1. * 1996–8 serosurvey used for the 1968–80 birth cohort; 1999 serosurvey used for the 1981–2 birth cohort
  2. age-adjusted to the 2002 Australian population
  3. ** Victorian Infectious Diseases Reference Laboratory