From: Analysis of Bordetella pertussis pertactin and pertussis toxin types from Queensland, Australia, 1999–2003
Year
Number of PRN Types
PT (All ptxS1A)
Ages or (Median)
Female:Male
prn1
prn2
prn3
1999
3
0
1,63,46
1:2
2000
1
2
1,1
2:0
2001
9
10
(5)
8:2
2002
21
26
(<6 m)
12:14
2003
4
5
3 m,11 m,3,2,2
3:2