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Table 1 C. jejuni Serotypes Number of reported cases of C. jejuni for Grampian, Scotland (1997–1999) by Penner serotypes, including separation into groups less than and greater than 40 years of age.

From: Does age acquired immunity confer selective protection to common serotypes of Campylobacter jejuni?

Penner Serotype Total (%) Age
   <40 (%) >40 (%)
4 complexa 427 (21.8) 286 (23.8) 141 (18.7)
2 420 (21.5) 285 (23.8) 135 (17.9)
1,44 205 (10.5) 130 (10.8) 75 (9.9)
11 128 (6.5) 55 (4.6) 73 (9.7)
6,7 113 (5.8) 67 (5.6) 46 (6.1)
8 45 (2.3) 18 (1.5) 27 (3.6)
23 44 (2.3) 25 (2.1) 19 (2.5)
21 27 (1.4) 16 (1.3) 11 (4.5)
5 26 (1.3) 17 (1.4) 9 (1.2)
9 23 (1.2) 14 (1.2) 9 (1.2)
37 23 (1.2) 10 (0.8) 13 (1.7)
Otherb 474 (24.2) 277 (23.1) 197 (26.1)
Total 1955 1200 755
  1. aSerotypes 4, 13, 16, 43, 50
  2. b Types accounting for less than 1% of total.