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Table 3 Frequencies of GC-types during 1949-964, 1965-1992 and 1993-2008

From: Changes in the genomic content of circulating Bordetella pertussis strains isolated from the Netherlands, Sweden, Japan and Australia: adaptive evolution or drift?

 

1949-1964

1965-1992

1993-2008

Country

GC-type 1

GC-type 2

Other GC-types

N

GC-type 1

GC-type 2

Other GC-types

N

GC-type 1

GC-type 2

Other GC-types

N

The Netherlands

0

0

100

16

32

5

62

37

14

47

39

49

Sweden

0

0

0

0

100

0

0

7

46

38

15

13

Australia

0

0

0

0

43

0

57

7

0

50

50

8

Japan

0

0

0

0

0

0

100

3

20

0

80

5

Other

33

0

67

3

0

0

0

0

0

0

0

0

Total

5

0

95

19

41

4

55

54

19

43

39

75

  1. GC-type frequencies are given in percentages
  2. 38 GC-types are found in low frequencies: GC-types 3-40.