Fredy G. Ovallos

Sao Paulo, SP, Brazil

Last Updated: 09/26/2026

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Found 11 publications

Spatiotemporal analysis of cutaneous and visceral leishmaniasis in Brazil, 2003 to 2022.

Spatiotemporal analysis of cutaneous and visceral leishmaniasis in Brazil, 2003 to 2022.

Journal: Acta tropica

Published: January 24, 2026

Visceral leishmaniasis in a peri-urban area of São Paulo associated with Nyssomyia whitmani.

Visceral leishmaniasis in a peri-urban area of São Paulo associated with Nyssomyia whitmani.

Journal: Revista de saude publica

Published: September 29, 2025

Comparative evaluation of two sampling methods for Lutzomyia longipalpis in urban areas and identification of visceral leishmaniasis risk zones in Castilho, São Paulo, Brazil.

Comparative evaluation of two sampling methods for Lutzomyia longipalpis in urban areas and identification of visceral leishmaniasis risk zones in Castilho, São Paulo, Brazil.

Journal: Acta tropica

Published: June 25, 2025

Natural infection of Lutzomyia longipalpis (Lutz & Neiva, 1912) by Leishmania infantum in a municipality with a high incidence of visceral leishmaniasis in the Brazilian Midwest.

Natural infection of Lutzomyia longipalpis (Lutz & Neiva, 1912) by Leishmania infantum in a municipality with a high incidence of visceral leishmaniasis in the Brazilian Midwest.

Journal: Revista da Sociedade Brasileira de Medicina Tropical

Published: June 05, 2023

Updating Ecological and Behavioral Aspects of the Sandfly Fauna in the Vale do Ribeira Region, São Paulo State, Brazil.

Updating Ecological and Behavioral Aspects of the Sandfly Fauna in the Vale do Ribeira Region, São Paulo State, Brazil.

Journal: Insects

Published: September 14, 2021

Vaccine effectiveness and use of collar impregnated with insecticide for reducing incidence of Leishmania infection in dogs in an endemic region for visceral leishmaniasis, in Brazil.

Vaccine effectiveness and use of collar impregnated with insecticide for reducing incidence of Leishmania infection in dogs in an endemic region for visceral leishmaniasis, in Brazil.

Journal: Epidemiology and infection

Published: January 19, 2018

Correction: Canine-Based Strategies for Prevention and Control of Visceral Leishmaniasis in Brazil.

Correction: Canine-Based Strategies for Prevention and Control of Visceral Leishmaniasis in Brazil.

Journal: PloS one

Published: September 09, 2016

Canine-Based Strategies for Prevention and Control of Visceral Leishmaniasis in Brazil.

Canine-Based Strategies for Prevention and Control of Visceral Leishmaniasis in Brazil.

Journal: PloS one

Published: February 25, 2016

Sandflies (Diptera: Psychodidae) associated with opossum nests at urban sites in southeastern Brazil: a risk factor for urban and periurban zoonotic Leishmania transmission?

Sandflies (Diptera: Psychodidae) associated with opossum nests at urban sites in southeastern Brazil: a risk factor for urban and periurban zoonotic Leishmania transmission?

Journal: Memorias do Instituto Oswaldo Cruz

Published: February 10, 2013

The sandfly fauna, anthropophily and the seasonal activities of Pintomyia spinicrassa (Diptera: Psychodidae: Phlebotominae) in a focus of cutaneous leishmaniasis in northeastern Colombia.

The sandfly fauna, anthropophily and the seasonal activities of Pintomyia spinicrassa (Diptera: Psychodidae: Phlebotominae) in a focus of cutaneous leishmaniasis in northeastern Colombia.

Journal: Memorias do Instituto Oswaldo Cruz

Published: August 12, 2012

Description of two new sand fly species related to Nyssomyia antunesi (Diptera, Psychodidae, Phlebotominae).

Description of two new sand fly species related to Nyssomyia antunesi (Diptera, Psychodidae, Phlebotominae).

Journal: Journal of medical entomology

Published: April 13, 2012

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Last Updated: 09/26/2026