Table 1 Crude and Stratum-Specific Rates of Laboratory-Confirmed Pertussis in Greater Toronto Area, 1993-2007

Overall

3.68

3.54

to

3.82

Age

0-4

31.39

29.79

to

33.08

5-9

9.46

8.60

to

10.40

10-14

7.43

6.68

to

8.26

15-19

2.05

1.67

to

2.51

20+

0.57

0.51

to

0.64

Gender

Male

3.58

3.39

to

3.79

Female

3.77

3.57

to

3.98

Time Period

Prior to Introduction of PCR (January 1993-December 1998)

2.06

1.89

to

2.24

Initial Introduction of PCR Testing (January 1999-April 2005)

2.06

1.91

to

2.23

Introduction of Highly Sensitive PCR (May 2005-)

10.15

9.64

to

10.70