Parasitological observations on three Bolivian localities including rural communities, cities and institutions

Cancrini, Gabriella; Bartoloni, Alessandro; Paradisi, Francesco; Núñez, Lorena

doi:10.1080/00034983.1989.11812392

Cited by 21 publications

(27 citation statements)

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“…It also confirms, in this area of south-eastern Bolivia, the dramatic decrease in nematodes recently observed in children living in other semi-urban and rural areas of the Bolivian Chaco [12]. Indeed, apart from H. nana (5.8%), the helminths identified (at a very low prevalence) in this study were only A. lumbricoides (1.3%), hookworms (0.9%) and S. stercoralis (0.4%), in contrast with data collected in the same area in 1987 which reported a high prevalence of all STHs, including Trichostrongylus [19].…”

Section: Discussioncontrasting

confidence: 51%

Intestinal parasitic infections and associated epidemiological drivers in two rural communities of the Bolivian Chaco

Macchioni

Segundo

Totino

et al. 2016

J Infect Dev Ctries

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Introduction: In 2013 a coproparasitological survey was carried out in two rural communities of the Bolivian Chaco to determine the prevalence of intestinal parasitic infections (IPIs) and to investigate on possible infection drivers through a questionnaire interview. Methodology: Faecal samples were examined by microscopy. Samples positive for Entamoeba histolytica complex and Blastocystis were molecularly examined to identify the species/subtypes involved. Results: The overall infection rate was 86%, identical in both communities and mostly due to protozoa. Soil-transmitted helminths were detected in <3% of children and adults. Discussion: The protozoa detected, including Blastocystis subtypes, indicate faecal contamination of the environment by both humans (as confirmed by the presence of Hymenolepis nana) and animals. Nested-PCR identified E. histolytica, thus signalling the possible occurrence of invasive amoebosis. Lack of safe water, environmental contamination, poor sanitation and hygiene, shared by both communities, are the main drivers of IPIs. In addition, unlike gender and socioeconomic factors, childhood (only for some species), crowding and cohabitation with animals proved to be further significant protozoon infection risk factors. Conclusions: These results highlight the need for the promotion of access to clean water, improved sanitation and better hygiene, thus reducing the frequency of preventive chemotherapy for STHs while continuing to monitor the population for possible recrudescence.

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Section: Discussioncontrasting

confidence: 51%

Intestinal parasitic infections and associated epidemiological drivers in two rural communities of the Bolivian Chaco

Macchioni

Segundo

Totino

et al. 2016

J Infect Dev Ctries

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“…37,[44][45][46] Nevertheless, in populations in which the parasite is endemic, B. coli is usually found in asymptomatic persons. 6,7,13 The prevalences obtained, the apparent absence of symptoms or signs of illness due to this parasite in the school children surveyed at the moment of stool sampling (ill children did not go to school), and the consistency of stool samples suggest that the infected students are apparently asymptomatic carriers.…”

Section: Discussionmentioning

confidence: 91%

“…In the first, a prevalence of 1.8% among 381 apparently healthy subjects from three communities was reported. 13 The other two reports were on two different regions of two provinces of the Department of La Paz (area ϭ 133,985 km 2 with 2,406,185 inhabitants in 1990). One of them, Coroico, a village located at an altitude of only 1,828 meters in the Yungas region (Nor Yungas Province), had a prevalence rate of 1.3% in 385 children 2-9 years of age; 14 the other in an Indian (Quechua ethnicity) hamlet called Amarete, at an altitude of 3,700 meters and located in the northern Altiplano region in Saavedra Province 200 km from the city of La Paz, had a prevalence rate of 8% in 100 children 4-15 years of age.…”

mentioning

confidence: 99%

Balantidiasis in Aymara children from the northern Bolivian Altiplano.

Esteban

Aguirre²,

Angles³

et al. 1998

The American Journal of Tropical Medicine and Hygiene

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Abstract. Balantidium coli infection was coprologically studied in 2,124 Aymara children 5-19 years of age from the schools of 22 communities of the northern Bolivian Altiplano over a five-year period. Infection with B. coli was found in 11 of the communities surveyed, with prevalences of 1.0-5.3% (overall prevalence ϭ 1.2%). The prevalences observed are some of the highest reported and did not differ significantly among the various age groups or between boys and girls. These prevalences, the apparent absence of symptoms or signs of illness due to this parasite in the schoolchildren surveyed at the time of stool sampling, and the consistency of stool samples of the infected students suggest that they are apparently asymptomatic carriers. Infection with B. coli must be considered as an endemic anthropozoonosis in the area studied. A relationship between B. coli infection and Altiplanic pigs is suggested.Balantidium coli (Malmsten, 1857) (Ciliophora: Balantiidae) is the largest protozoan and the only ciliate parasite of humans. Although numerous animal species are known to harbor B. coli, pigs have a particularly high rate of infection (20-100%) and consequently are generally considered the main natural reservoir of this parasite.

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“…Hymenolepis nana and Giardia intestinalis trends were also shown as examples of faeco‐oral transmitted parasites. Study population was constituted by general population in 1987 ( n = 381) and 2013 ( n = 223) , preschool‐ and school‐age children (SAC) in 1990 ( n = 179) and 2011 ( n = 268) and only SAC in 2016 ( n = 426) and 2017 ( n = 520). In 1987 and 2011, the surveyed areas included both rural and urban areas, while other surveys were limited to rural areas.…”

Section: Discussionmentioning

confidence: 99%

Scaling down of a deworming programme among school‐age children after a thirty‐year successful intervention in the Bolivian Chaco

Spinicci

Macchioni

Rojo

et al. 2018

Tropical Med Int Health

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Parasitological observations on three Bolivian localities including rural communities, cities and institutions

Cited by 21 publications

References 0 publications

Intestinal parasitic infections and associated epidemiological drivers in two rural communities of the Bolivian Chaco

Intestinal parasitic infections and associated epidemiological drivers in two rural communities of the Bolivian Chaco

Balantidiasis in Aymara children from the northern Bolivian Altiplano.

Scaling down of a deworming programme among school‐age children after a thirty‐year successful intervention in the Bolivian Chaco

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