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Table 1 Epidemiological characteristics and vaccination status of children

From: Molecular epidemiology of Bordetella pertussis and analysis of vaccine antigen genes from clinical isolates from Shenzhen, China

Number of immunizations

Number of cases

Gender

Age (months)

Male

female

0–3

4–6

7–12

> 12

0

11

8

3

9

2

0

0

1

13

6

7

1

9

2

1

2

6

3

3

1

2

2

1

3

5

2

3

0

0

2

3

4

7

3

4

0

0

0

7

Unknown

8

6

2

1

2

3

1