Skip directly to search Skip directly to A to Z list Skip directly to site content
CDC Home

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 of Page

USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO