Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

Volume 14, Number 6—June 2008

Dispatch

Prevalence of Cryptosporidium spp. and Giardia intestinalis in Swimming Pools, Atlanta, Georgia

Joan M. Shields*†Comments to Author , Elizabeth R. Gleim*, and Michael J. Beach*
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †CDC Foundation, Atlanta, Georgia, USA;

Main Article

Table

Pathogen distribution in 13 Cryptosporidium- and 
Giardia-positive swimming pools (n = 13)

Characteristic % (n/N) Type of parasite*
Age of swimmers†
Children 10.7 (3/28) 2 G, CG
Adults 2.3 (1/43) G
Mixed 10.1 (9/89) 7 G, C, Ch
Total
8.1 (13/160)

Pool type‡
Community 15.6 (10/64) 7 G, CG, C, Ch
School 4.8 (1/20) G
Health club 0 (0/25)
Apartment 3.9 (2/51) 2 G
Total
8.1 (13/160)

Pool size (x1,000 gallons)
<5 22.2 (4/18) 3 G, CG
6–50 9.3 (5/54) 4 G, Ch
51–100 0 (0/40)
101–200 11.4 (4/35) 3 G, C
>200 0 (0/13)
Total
8.1 (13/160)

No. swimmers/bathers per week
1–75 14.7% (10/68) 7 G, CG, C, Ch
76–200 7.4% (2/27) 2 G
201–500 2.9% (1/35) G
>500 0% (0/30)
Total 8.1% (13/160)

*G, Giardia intestinalis; C, Cryptosporidium spp.; Ch, C. hominis; CG, both G. intestinalis and Cryptosporidium spp.
†Children defined as persons <16 y of age; adults defined as persons >16 y of age.
‡Residential and hotel/motel swimming pools were excluded from the study.

Main Article

TOP