Prevalência de parasitismo por Toxocara canis em cães e presença de ovos de Toxocara sp. no solo de localidades públicas da zona urbana do município de Londrina, Estado do Paraná, Brasil

Chieffi, Pedro Paulo; Müller, E.

doi:10.1590/s0034-89101976000400010

Cited by 48 publications

(42 citation statements)

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“…In the present study, eggs were detected throughout the year, but the recovery rate was significantly higher in autumn, in contrast with some studies carried out in south Brazil. Chieffi and Müller (1976) observed the greater contamination in winter and spring, while Gallina et al (2011) verified the greatest incidence of parasites in the spring.…”

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confidence: 89%

“…No correlation was found between the number of eggs recovered and the average monthly temperature (r = -0.492; p = 0.148) or between the number of eggs and the monthly rainfall (r = -0.299; p = 0.402). Seasonal fluctuation may also influence the recovery of eggs from soil samples (CHIEFFI; MÜLLER, 1976;QUEIROZ et al, 2006). Nevertheless, in southern Brazil, there are no difference between the numbers of eggs recovered in summer and winter (TIYO et al, 2008).…”

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confidence: 99%

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Contamination of public parks in Presidente Prudente (São Paulo, Brazil) by Toxocara spp. eggs

Santarém

Pereira

Alegre

2012

Rev. Bras. Parasitol. Vet.

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This study aims to evaluate soil contamination by Toxocara spp. eggs in public parks in Presidente Prudente, São Paulo, Brazil. Soil samples (500 g) were collected every month over a 12-month period, from 25 parks in different parts of the city (northern, southern, eastern, western and central areas). Two 10-g aliquots of the material collected from each park were subjected to the centrifuge-flotation method to recover Toxocara spp. eggs. Twenty-four out of the 25 squares studied (96.0%) were contaminated and the number of eggs recovered ranged from 1 to 398 per sample. Eggs were recovered all over the year. Despite the number being greater in autumn (p < 0.001), there was no correlation between number egg number and average monthly temperature (r = -0.492; p = 0.148) or between egg number and monthly rainfall (r = -0.299; p = 0.402). Park localization does not influence egg presence (p = 0.7116). Because of the high level of contamination of the parks by Toxocara spp. eggs, prevention of contamination of public areas by larva migrans agents is indicated.Keywords: Environment contamination, epidemiology, toxocariasis, larva migrans. ResumoO objetivo do estudo foi avaliar a contaminação do solo de praças públicas por ovos de Toxocara spp. em Presidente Prudente, São Paulo. Amostras de solo (500 g) foram coletadas mensalmente, durante um período de 12 meses, de 25 praças de cinco diferentes setores da cidade (norte, sul, leste, oeste e central). Duas alíquotas de 10 g do material coletado foram submetidas ao método de centrífugo-flutuação (sulfato de zinco; d = 1.200 g/cm 3 ), para recuperação dos ovos. Das 25 praças estudadas, 24 (96,0%) estavam contaminadas e o número variou de 1 a 398 ovos por amostra analisada. A recuperação foi verificada durante todos os meses do ano, sendo maior no outono (p < 0,001). Entretanto, não houve correlação entre o número de ovos e a temperatura média (r = -0,492; p = 0,148) e a precipitação pluviométrica (r = -0,299; p = 0,402) mensal. Não houve influência da localização dos parques sobre a quantidade de ovos (p = 0,7116). Devido ao alto nível de contaminação de parques públicos por ovos de Toxocara spp., a prevenção da contaminação de áreas públicas pelos agentes de larva migrans é indicada.Palavras-chave: Contaminação ambiental, epidemiologia, toxocaríase, larva migrans.

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confidence: 89%

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confidence: 99%

Contamination of public parks in Presidente Prudente (São Paulo, Brazil) by Toxocara spp. eggs

Santarém

Pereira

Alegre

2012

Rev. Bras. Parasitol. Vet.

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“…Frequency of human infection by Toxocara: Since the 1970s, it has been established that the essential factors for the occurrence of human infection by Toxocara and, consequently by VLM, are present in Brazil: a large number of dogs, mainly strays, infected with T. canis and frequent soil contamination by eggs of this ascarid 24,25,44 . However, only one decade later, reports on Toxocara human infection began to appear 28 and from the 1990s onward, several papers had been published reporting the presence of human infection in many Brazilian regions, with variable infection rates ( Table 2).…”

Section: Toxocara Canis Infection In Dogsmentioning

confidence: 99%

“…Evaluating the presence and viability of Toxocara eggs in soil samples, examined monthly in Londrina (Paraná State) over a one year period, CHIEFFI & MÜLLER 24 observed the occurrence of eggs in almost all samples; however, only in the periods between May-June and September-December was the observation of viable eggs frequent. QUEIROZ et al 86 …”

Section: Toxocara Canis Infection In Dogsmentioning

confidence: 99%

Human toxocariasis: contribution by Brazilian researchers

Chieffi

Santos

Queiroz

et al. 2009

Rev. Inst. Med. trop. S. Paulo

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“…In Brazil, studies have been done pointing out the contamination of public places by Toxocara spp. eggs 3,4,11,16 . Also, the epidemiology of toxocariasis in different regions has been studied.…”

Section: Introductionmentioning

confidence: 99%

Environmental contamination by Toxocara spp. Eggs in a rural settlement in Brazil

Santarém

Franco²,

Kozuki

et al. 2008

Rev. Inst. Med. trop. S. Paulo

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SUMMARYIn order to study the environmental contamination by Toxocara spp. eggs in a rural community from the Pontal do Paranapanema region, São Paulo State, Brazil, soil samples from 31 out of 121 plots were collected in eight different places on each house. The samples were submitted to flotation technique in sodium nitrate (d = 1.20g/cm 3 ). Eggs of Toxocara spp. were recovered in nine (29.03%) out of the 31 plots. At least one dog was registered in 27 of the 31 plots examined (87.1%) and at least one cat in 17 (54.84%). The number of pets per plot ranged from one to six (mean of 2.3) for dogs and one to 14 (mean of 1.29) for cats. In 16 plots (51.61%), the presence of both dogs and cats was observed. There was no relation between the presence of pets in the plots and soil contamination (p > 0.05). However, the environmental contamination by Toxocara spp. eggs associated to the poor conditions of the inhabitants may be an important risk factor for the human population to ocular or visceral larva migrans.

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Prevalência de parasitismo por Toxocara canis em cães e presença de ovos de Toxocara sp. no solo de localidades públicas da zona urbana do município de Londrina, Estado do Paraná, Brasil

Cited by 48 publications

References 5 publications

Contamination of public parks in Presidente Prudente (São Paulo, Brazil) by Toxocara spp. eggs

Contamination of public parks in Presidente Prudente (São Paulo, Brazil) by Toxocara spp. eggs

Human toxocariasis: contribution by Brazilian researchers

Environmental contamination by Toxocara spp. Eggs in a rural settlement in Brazil

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