Andressa Noronha Barbosa-Silva1,2, Rita de Cássia Moreira de Souza3, Liléia Diotaiuti3, Lúcia Maria Abrantes Aguiar4, Antonia Cláudia Jácome da Câmara2, Lúcia Maria da Cunha Galvão1,2, Egler Chiari1. 1. Programa de Pós-Graduação em Parasitologia, Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil. 2. Programa de Pós-Graduação em Ciências Farmacêuticas, Departamento de Análises Clínicas e Toxicológicas, Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, RN, Brasil. 3. Instituto René Rachou-FIOCRUZ Minas, Triatomine Research Group, Belo Horizonte, MG, Brasil. 4. Secretaria de Estado da Saúde Pública do Rio Grande do Norte, Natal, RN, Brasil.
Abstract
INTRODUCTION: The ecoepidemiological situation in the State of Rio Grande do Norte, Brazil is characterized by frequent invasion and colonization of domiciliary units (DUs) by several triatomine species, with high rates of natural infection by Trypanosoma cruzi. METHODS: We evaluated the possibility of vector transmission of T. cruzi based on records of the occurrence of domiciled triatomines collected by the Secretariat of State for Public Health from 2005 to 2015. During this period, 67.7% (113/167) of municipalities conducted at least one active search and 110 recorded the presence of insects in DUs. These activities were more frequent in municipalities considered to have a high and medium-level risk of T. cruzi transmission. RESULTS: Of 51,569 captured triatomines, the most common species were Triatoma brasiliensis (47.2%) and T. pseudomaculata (40.2%). Colonies of T. brasiliensis, T. pseudomaculata, T. petrocchiae, Panstrongylus lutzi, and Rhodnius nasutus were also recorded in the intradomicile and peridomicile. Natural infection by trypanosomatids was detected in 1,153 specimens; the highest rate was found in R. nasutus (3.5%), followed by T. brasiliensis (2.5%) and T. pseudomaculata (2.4%). There have been high levels of colonization over the years; however, not all infested DUs have been sprayed. CONCLUSIONS: This is the first report of intradomicile and peridomicile colonization by P. lutzi. These results demonstrate the risk of new cases of infection by T. cruzi and reinforce the need for continuous entomological surveillance in the State of Rio Grande do Norte.
INTRODUCTION: The ecoepidemiological situation in the State of Rio Grande do Norte, Brazil is characterized by frequent invasion and colonization of domiciliary units (DUs) by several triatomine species, with high rates of natural infection by Trypanosoma cruzi. METHODS: We evaluated the possibility of vector transmission of T. cruzi based on records of the occurrence of domiciled triatomines collected by the Secretariat of State for Public Health from 2005 to 2015. During this period, 67.7% (113/167) of municipalities conducted at least one active search and 110 recorded the presence of insects in DUs. These activities were more frequent in municipalities considered to have a high and medium-level risk of T. cruzi transmission. RESULTS: Of 51,569 captured triatomines, the most common species were Triatoma brasiliensis (47.2%) and T. pseudomaculata (40.2%). Colonies of T. brasiliensis, T. pseudomaculata, T. petrocchiae, Panstrongylus lutzi, and Rhodnius nasutus were also recorded in the intradomicile and peridomicile. Natural infection by trypanosomatids was detected in 1,153 specimens; the highest rate was found in R. nasutus (3.5%), followed by T. brasiliensis (2.5%) and T. pseudomaculata (2.4%). There have been high levels of colonization over the years; however, not all infested DUs have been sprayed. CONCLUSIONS: This is the first report of intradomicile and peridomicile colonization by P. lutzi. These results demonstrate the risk of new cases of infection by T. cruzi and reinforce the need for continuous entomological surveillance in the State of Rio Grande do Norte.
Authors: Marcos Antônio Bezerra-Santos; Rafael Antonio Nascimento Ramos; Artur Kanadani Campos; Filipe Dantas-Torres; Domenico Otranto Journal: Parasitol Res Date: 2021-03-31 Impact factor: 2.289
Authors: Antonio Ferreira Mendes-Sousa; Leid Daiane Neri de Araújo; Samires Silva de Sousa; Suzane de Carvalho Alencar; Wesesller Almeida de Sousa Júnior; Larisse Maria de Sousa; Suzane Maria da Rocha; José Cleves da Silva Maia; Márcia Maria Mendes Marques; Tamaris Gimenez Pinheiro; Edson Lourenço da Silva; Veruska Cavalcanti Barros; Ana Carolina Landim Pacheco Journal: Rev Soc Bras Med Trop Date: 2020-09-11 Impact factor: 1.581