Occurrence of Cryptosporidium oocysts and Giardia cysts in water supplies of San Pedro Sula, Honduras
Revista Panamericana de Salud Pública (OPS) = Pan American Journal of Public Health (PAHO)
; 4(6): 398-400, dic. 1998. tab
Article
in English
| PAHO
| ID: pah-27242
Responsible library:
US1.1
Localization: US1.1, PAHO COLL
ABSTRACT
During June 1996, water supplies of the city of San Pedro Sula, Honduras, were sampled to obtain an assessment of Cryptosporidium oocyst and Giardia cyst concentrations. Each sample was concentrated and stained with an indirect immunofluorescent antibody, and parasites were counted through microscopic analysis. In three surface water supplies, Cryptosporidium oocyst concentrations ranged from 58 to 260 oocysts per 100 L, and Giardia cysts were present in concentrations ranging from 380 to 2 100 cysts per 100 L. Unlike the surface water samples, groundwater had a higher concentration of Cryptosporidium oocysts (26/100 L) than Giardia cysts (6/100 L), suggesting that the groundwater aquifer protects the water supply more effectively from larger Giardia cysts. Cryptosporidium oocyst concentrations are within the typical range for surface water supplies in North America whereas Giardia cyst concentrations are elevated. Efforts should be made to protect raw water from sources of contamination
Full text:
Available
Collection:
Databases of international organizations
Database:
PAHO
Main subject:
Water Supply
/
Cryptosporidium
/
Giardia
Country/Region as subject:
Central America
/
Honduras
Language:
English
Journal:
Revista Panamericana de Salud Pública (OPS) = Pan American Journal of Public Health (PAHO)
Year:
1998
Document type:
Article