Table 1

The prevalence distributions of parasites of 507 rural schoolchildren 6–10 years from 12 rural communities of two Mexican states. 1997–2000.

Infection
Prevalence % (n)f
95%CIa

Polyparasitismb
57 (289)
53–61
Helminth Infectionc
53 (269)
48–57
Protozoan Infectiond
63 (319)
59–67
Pathogenic sp.


     A. lumbricoides
9 (46)
7–11
     T. trichiura
16 (81)
13–19
     G. duodenalis
24 (122)
20–28
     E. histolytica/dispar
5 (25)
3–7
     H. nana
23 (117)
19–27
Non-pathogenic sp.


     E. coli
46 (233)
42–50
     E. nana
38 (193)
34–42

a Confidence interval; b Infection with two or more pathogenic and/or non-pathogenic parasites; c Infection with helminths only; d Infection with protozoa only; f Number of children.

Quihui et al. BMC Public Health 2006 6:225   doi:10.1186/1471-2458-6-225