Prevalence of Antibodies to Trypanosoma cruzi, Leishmania infantum, Encephalitozoon cuniculi, Sarcocystis neurona, and Neospora caninum in Capybara, Hydrochoerus hydrochaeris, from São Paulo State, Brazil

Introduction: American tripanosomiasis (Chagas disease), the second most neglected disease in the world, is caused by the protozoan parasite Trypanosoma cruzi. Though natural transmission by insect vectors has been controlled, there is significant risk of T. cruzi transmission by blood transfusion in non-endemic regions, generally due to immigration processes from endemic areas. Methodology: The objective of this study was to evaluate anti-T. cruzi seroprevalence in blood donors from the western part of São Paulo State, Brazil, by serologic and immunofluorescence confirmation tests for the period between 2012 and 2014. Currently, this region is regarded as a non-endemic area for Chagas disease. Results: The confirmed overall T. cruzi seroprevalence among blood donors was 0.10%, which can be considered low compared to other Brazilian regions. Nevertheless, the distribution of the anti-T. cruzi antibodies within the examined region was uneven, and some areas of significantly higher prevalence were observed. Conclusions: We could consider two tendencies in the prevalence of T. cruzi: (i) residual older undiagnosed cases from São Paulo State, and (ii) immigration from endemic Brazilian or South American regions. The discordance obtained for T. cruzi prevalence by serologic and immunofluorescence methods demonstrates that more specific routine diagnosis is needed to diminish the cost of the assays and the loss of blood supply once all seropositive blood bags are immediately discarded.

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MAMMAL ROAD MORTALITY AND COST–BENEFIT ANALYSES OF MITIGATION MEASURES AIMED AT REDUCING COLLISIONS WITH CAPYBARA ( Hydrochoerus hydrochaeris ) IN SÃO PAULO STATE, BRAZIL

Oecologia Australis ◽

10.4257/oeco.2013.1701.11 ◽

2013 ◽

Vol 17 (1) ◽

pp. 129-146 ◽

Cited By ~ 15

Author(s):

Marcel P. Huijser ◽

Fernanda Delborgo Abra ◽

John W. Duffield

Keyword(s):

Cost Benefit ◽

Sao Paulo ◽

Mitigation Measures ◽

Road Mortality ◽

São Paulo ◽

Paulo State ◽

Hydrochoerus Hydrochaeris ◽

São Paulo State

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Prevalence of anti-Toxoplasma gondii and anti-Neospora caninum antibodies in ovine from São Paulo State, Brazil

Veterinary Parasitology ◽

10.1016/j.vetpar.2004.06.006 ◽

2004 ◽

Vol 123 (3-4) ◽

pp. 161-166 ◽

Cited By ~ 67

Author(s):

L.P.C. Figliuolo ◽

N. Kasai ◽

A.M.A. Ragozo ◽

V.S.O. de Paula ◽

R.A. Dias ◽

...

Keyword(s):

Toxoplasma Gondii ◽

Neospora Caninum ◽

Sao Paulo ◽

São Paulo ◽

Paulo State ◽

São Paulo State

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Prevalence of anti-Toxoplasma gondii and anti-Neospora caninum antibodies in goat from São Paulo State, Brazil

Small Ruminant Research ◽

10.1016/j.smallrumres.2003.12.013 ◽

2004 ◽

Vol 55 (1-3) ◽

pp. 29-32 ◽

Cited By ~ 43

Author(s):

L.P.C. Figliuolo ◽

A.A.R. Rodrigues ◽

R.B. Viana ◽

D.M. Aguiar ◽

N. Kasai ◽

...

Keyword(s):

Toxoplasma Gondii ◽

Neospora Caninum ◽

Sao Paulo ◽

São Paulo ◽

Paulo State ◽

São Paulo State

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Spatial distribution and population genetics of Leishmania infantum genotypes in São Paulo State, Brazil, employing multilocus microsatellite typing directly in dog infected tissues

Infection Genetics and Evolution ◽

10.1016/j.meegid.2013.04.031 ◽

2013 ◽

Vol 18 ◽

pp. 48-59 ◽

Cited By ~ 16

Author(s):

Gabriela Motoie ◽

Gabriel Eduardo Melim Ferreira ◽

Elisa Cupolillo ◽

Flavio Canavez ◽

Vera Lucia Pereira-Chioccola

Keyword(s):

Population Genetics ◽

Spatial Distribution ◽

Leishmania Infantum ◽

Sao Paulo ◽

São Paulo ◽

Paulo State ◽

Microsatellite Typing ◽

São Paulo State

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SEROPREVALENCE AND RISK FACTORS ASSOCIATED TO NEOSPORA CANINUM IN FEMALE BOVINES FROM THE WESTERN SÃO PAULO STATE, BRAZIL

Arquivos do Instituto Biológico ◽

10.1590/1808-1657v78p1832011 ◽

2011 ◽

Vol 78 (2) ◽

pp. 183-189 ◽

Cited By ~ 1

Author(s):

D.M. Aguiar ◽

D.P Lacerda ◽

R.C. Orlandelli ◽

A.O. Medina ◽

S.S Azevedo ◽

...

Keyword(s):

Management Practices ◽

Neospora Caninum ◽

Sao Paulo ◽

Western Region ◽

São Paulo ◽

Paulo State ◽

Production Type ◽

Seropositive Animal ◽

São Paulo State ◽

The Western Region

ABSTRACT The prevalence of anti-Neospora caninum antibodies was evaluated in 1104 cows from 118 farms in the Western region of São Paulo State, Brazil, using indirect immunofluorescence antibody assay. Sixty-five (55.0%; CI 95%: 46.0-63.8%) farms showed at least one seropositive animal. Prevalence over 10% was observed in 33 farms (28.0%; CI 95%: 20.4-36.5%), and over 20% in 18 farms (15.2%; CI 95%: 9.5-22.6%). Prevalence of animals showed 120 (10.9%) positive females (IFAT ? 1:100). The positivity in the farms showed significant association with farms producing more than 50 liters per day. Infection caused by the protozoan N. caninum occurs in the Western region of the state of São Paulo, and although no differences were observed either in relation to the production type or management practices, greater milk yield was related to greater prevalence of infection.

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