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. 2010 Jun 2;5(6):e10924. doi: 10.1371/journal.pone.0010924

Table 2. Proportion of pathogens by age group*.

Pathogen Age Group [n (%)]**
<1 mo (n = 95) ≥1 mo – <12 mo (n = 629) ≥1 yr – <5 yr (n = 564) ≥5 yr – <15 yr (n = 313) ≥15 yr – <50 yr (n = 2166) ≥50 yr – <65 yr (n = 185) ≥65 yr (n = 77) Unknown age (n = 456)
BACTERIA
Salmonella spp. 1 (1) 34 (5) 29 (5) 13 (4) 80 (4) 5 (3) 2 (3) 11 (2)
Escherichia coli 2 (2) 11 (2) 9 (2) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)
Campylobacter spp. 2 (2) 8 (2) 8 (1) 2 (<1) 2 (<1) 0 (0) 0 (0) 0 (0)
Shigella spp. 0 (0) 14 (2) 29 (5) 16 (5) 92 (4) 8 (4) 3 (4) 18 (4)
Total bacterial isolates: 5 (5) 67 (11) 75 (13) 31 (10) 174 (8) 13 (7) 5 (6) 29 (6)
PARASITES
Cryptosporidium spp. 0 (0) 25 (4) 42 (7) 3 (1) 17 (<1) 7 (4) 1 (1) 4 (1)
Isospora spp. 1 (1) 1 (<1) 3 (1) 7 (2) 78 (4) 4 (2) 0 (0) 19 (4)
Giardia lamblia 0 (0) 2 (<1) 6 (1) 7 (2) 13 (<1) 1 (<1) 1 (1) 4 (1)
Other Parasites 0 (0) 0 (0) 1 (<1) 4 (1) 24 (1) 1 (<1) 0 (0) 3 (<1)
Total parasitic isolates 1 (1) 28 (4) 52 (9) 21 (7) 132 (6) 13 (7) 2 (3) 30 (7)
NO PATHOGEN 90 (95) 540 (86) 448 (79) 262 (83) 1874 (87) 160 (86) 70 (91) 397 (87)

Abbreviations: mo, month(s); yr, year(s); spp, species.

*values listed as number (percent of specimens in age group).

**not all columns sum to 100% due to co-infection with multiple pathogens among some specimens.