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Titolo:
THE PREVALENCE OF INFECTION BY INTESTINAL PARASITES IN AN URBAN SLUM IN SAO-PAULO, BRAZIL
Autore:
FERREIRA CS; FERREIRA MU; NOGUEIRA MR;
Indirizzi:
UNIV SAO PAULO,INST BIOMED SCI,DEPT PARASITOL,AV PROF LINEU PRESTES 1374 BR-05508900 SAO PAULO SP BRAZIL
Titolo Testata:
Journal of tropical medicine and hygiene
fascicolo: 2, volume: 97, anno: 1994,
pagine: 121 - 127
SICI:
0022-5304(1994)97:2<121:TPOIBI>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRICHURIS-TRICHIURA INFECTION; ASCARIS-LUMBRICOIDES; POPULATION-DYNAMICS; SCHOOL-CHILDREN; EPIDEMIOLOGY; COMMUNITIES; INTENSITY; HELMINTHS; HOOKWORM;
Keywords:
INTESTINAL PARASITES; ASCARIS LUMBRICOIDES; TRICHURIS TRICHIURA; EPIDEMIOLOGY; URBANIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
39
Recensione:
Indirizzi per estratti:
Citazione:
C.S. Ferreira et al., "THE PREVALENCE OF INFECTION BY INTESTINAL PARASITES IN AN URBAN SLUM IN SAO-PAULO, BRAZIL", Journal of tropical medicine and hygiene, 97(2), 1994, pp. 121-127

Abstract

Sedimentation parasitological examinations were performed in stool specimens from a random household-based sample of 407 dwellers, all age groups being represented, in a slum of Sao Paulo, south-eastern Brazil. Intestinal parasites were detected in 45.7% of the specimens. The most prevalent parasites in this population were Ascaris lumbricoides (23.8%) and Trichuris trichiura (17.2%); only 17 individuals (4.2%) harboured Giardia duodenalis and 6 (1.5%) harboured Entamoeba histolytica. Taenia and hookworm eggs were not found. Simultaneous infection by A.lumbricoides and T. trichiura was diagnosed in 34 subjects (8.4%). The prevalence rates of infection by A. lumbricoides and T. trichiura (including those of mixed infections by both species) were highest amongchildren aged 2-12 years. In samples positive for A. lumbricoides and/or T. trichiura, egg counts were done on Kato's thick smears and the results expressed as eggs per gram faeces (e.p.g.). The mean intensityof infection (measured as e.p.g.) in A. lumbricoides-infected subjects was highest among children aged 6-12 years and young adults under 25years, while in T. trichiura-infected subjects the highest egg countswere observed in children aged 2-12 years. The frequency distributions of eggs of both nematodes passed by the host population were overdispersed. Moreover, a strong positive correlation (P<0.0001) was observed between counts of eggs of both species passed by the same hosts.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/21 alle ore 07:36:26