A second community outbreak of waterborne giardiasis in Canada and serological investigation of patients.
Trans R Soc Trop Med Hyg
; 88(4): 395-9, 1994.
Article
em En
| MEDLINE
| ID: mdl-7570815
ABSTRACT
A waterborne outbreak of giardiasis which occurred 5 years after another in the same town in Canada was investigated. Sera from residents defined as cases or non-cases were tested by enzyme-linked immunosorbent assay (ELISA) and compared with sera from symptomatic and asymptomatic control groups. The outbreak-associated Giardia isolate was retrieved from contaminated drinking water and antigen from this strain was used in the serological investigation. Up to 84% of cases were identified by ELISA. More cases were identified by elevated immunoglobulin (Ig) G than by either elevated anti-Giardia IgA or IgM levels. Residents of the community infected during the first outbreak were significantly less likely to have been reinfected during the second outbreak. This is the first report of a second waterborne outbreak occurring in a community and results of the investigations are consistent with an acquired, protective immunity lasting at least 5 years.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Abastecimento de Água
/
Surtos de Doenças
/
Giardíase
Limite:
Adolescent
/
Adult
/
Aged
/
Aged80
/
Animals
/
Child
/
Child, preschool
/
Female
/
Humans
/
Infant
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Trans R Soc Trop Med Hyg
Ano de publicação:
1994
Tipo de documento:
Article
País de afiliação:
Canadá