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McConnel G, Lawson J, Cañas-Carrell JE, Brelsfoard CL. The effects of nano- and microplastic ingestion on the survivorship and reproduction of Aedes aegypti and Aedes albopictus (Diptera: Culicidae). ENVIRONMENTAL ENTOMOLOGY 2024; 53:594-603. [PMID: 38728422 DOI: 10.1093/ee/nvae038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/29/2024] [Accepted: 04/16/2024] [Indexed: 05/12/2024]
Abstract
Microplastics (MPs) and nanoplastics (NPs) are pervasive environmental pollutants that are commonly ingested by organisms at different trophic levels. While the effects of MPs on aquatic organisms have been extensively studied, the impacts of MP ingestion on the host fitness of terrestrial organisms, mainly insects, have been relatively unexplored. This study investigates the effects of MP and NP ingestion on the survivorship and reproduction of 2 medically important mosquito species, Aedes aegypti Linnaeus (Diptera: Culicidae) and Aedes albopictus Skuse (Diptera: Culicidae). Larval and pupal survivorship of Ae. albopictus were not significantly affected by particle size or concentration, but there was a reduction of Ae. aegypti pupal survivorship associated with the ingestion of 0.03 µm NPs. In addition, there was little observed impact of 0.03 µm NP and 1.0 µm MP ingestion on adult survivorship, fecundity, and longevity. To further investigate the effects of MP ingestion on mosquito fitness, we also examined the effects of MPs of varying shape, size, and plastic polymer type on Ae. aegypti immature and adult survivorship. The data suggest that the polymer type and shape did not impact Ae. aegypti immature or adult survivorship. These findings highlight that understanding the effects of microplastic ingestion by mosquitoes may be complicated by the size, composition, and amount ingested.
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Affiliation(s)
- Gabriella McConnel
- Department of Environmental Toxicology, Texas Tech University, 1207 S. Gilbert Drive, Lubbock, TX 79416, USA
| | - Jordann Lawson
- Department of Biological Sciences, Texas Tech University, 2901 Main Street, Lubbock, TX 79409, USA
| | - Jaclyn E Cañas-Carrell
- Department of Environmental Toxicology, Texas Tech University, 1207 S. Gilbert Drive, Lubbock, TX 79416, USA
| | - Corey L Brelsfoard
- Department of Biological Sciences, Texas Tech University, 2901 Main Street, Lubbock, TX 79409, USA
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Frasca F, Sorrentino L, Fracella M, D’Auria A, Coratti E, Maddaloni L, Bugani G, Gentile M, Pierangeli A, d’Ettorre G, Scagnolari C. An Update on the Entomology, Virology, Pathogenesis, and Epidemiology Status of West Nile and Dengue Viruses in Europe (2018-2023). Trop Med Infect Dis 2024; 9:166. [PMID: 39058208 PMCID: PMC11281579 DOI: 10.3390/tropicalmed9070166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 07/16/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
In recent decades, increases in temperature and tropical rainfall have facilitated the spread of mosquito species into temperate zones. Mosquitoes are vectors for many viruses, including West Nile virus (WNV) and dengue virus (DENV), and pose a serious threat to public health. This review covers most of the current knowledge on the mosquito species associated with the transmission of WNV and DENV and their geographical distribution and discusses the main vertebrate hosts involved in the cycles of WNV or DENV. It also describes virological and pathogenic aspects of WNV or DENV infection, including emerging concepts linking WNV and DENV to the reproductive system. Furthermore, it provides an epidemiological analysis of the human cases of WNV and DENV reported in Europe, from 1 January 2018 to 31 December 2023, with a particular focus on Italy. The first autochthonous cases of DENV infection, with the most likely vector being Aedes albopictus, have been observed in several European countries in recent years, with a high incidence in Italy in 2023. The lack of treatments and effective vaccines is a serious challenge. Currently, the primary strategy to prevent the spread of WNV and DENV infections in humans remains to limit the spread of mosquitoes.
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Affiliation(s)
- Federica Frasca
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy; (L.S.); (M.F.); (A.D.); (E.C.); (M.G.); (A.P.); (C.S.)
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy; (L.M.); (G.B.); (G.d.)
| | - Leonardo Sorrentino
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy; (L.S.); (M.F.); (A.D.); (E.C.); (M.G.); (A.P.); (C.S.)
| | - Matteo Fracella
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy; (L.S.); (M.F.); (A.D.); (E.C.); (M.G.); (A.P.); (C.S.)
| | - Alessandra D’Auria
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy; (L.S.); (M.F.); (A.D.); (E.C.); (M.G.); (A.P.); (C.S.)
| | - Eleonora Coratti
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy; (L.S.); (M.F.); (A.D.); (E.C.); (M.G.); (A.P.); (C.S.)
| | - Luca Maddaloni
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy; (L.M.); (G.B.); (G.d.)
| | - Ginevra Bugani
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy; (L.M.); (G.B.); (G.d.)
| | - Massimo Gentile
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy; (L.S.); (M.F.); (A.D.); (E.C.); (M.G.); (A.P.); (C.S.)
| | - Alessandra Pierangeli
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy; (L.S.); (M.F.); (A.D.); (E.C.); (M.G.); (A.P.); (C.S.)
| | - Gabriella d’Ettorre
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, Italy; (L.M.); (G.B.); (G.d.)
| | - Carolina Scagnolari
- Laboratory of Virology, Department of Molecular Medicine, Sapienza University of Rome, 00185 Rome, Italy; (L.S.); (M.F.); (A.D.); (E.C.); (M.G.); (A.P.); (C.S.)
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Polycarpo CR, Walter-Nuno AB, Azevedo-Reis L, Paiva-Silva GO. The vector-symbiont affair: a relationship as (im)perfect as it can be. CURRENT OPINION IN INSECT SCIENCE 2024; 63:101203. [PMID: 38705385 DOI: 10.1016/j.cois.2024.101203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/07/2024]
Abstract
Vector-borne diseases are globally prevalent and represent a major socioeconomic problem worldwide. Blood-sucking arthropods transmit most pathogenic agents that cause these human infections. The pathogens transmission to their vertebrate hosts depends on how efficiently they infect their vector, which is particularly impacted by the microbiota residing in the intestinal lumen, as well as its cells or internal organs such as ovaries. The balance between costs and benefits provided by these interactions ultimately determines the outcome of the relationship. Here, we will explore aspects concerning the nature of microbe-vector interactions, including the adaptive traits required for their establishment, the varied outcomes of symbiotic interactions, as well as the factors influencing the transition of these relationships across a continuum from parasitism to mutualism.
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Affiliation(s)
- Carla R Polycarpo
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro 21941-902, Brazil
| | - Ana B Walter-Nuno
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro 21941-902, Brazil
| | - Leonan Azevedo-Reis
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro 21941-902, Brazil
| | - Gabriela O Paiva-Silva
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro 21941-902, Brazil.
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Han Y, Pu Q, Fan T, Wei T, Xu Y, Zhao L, Liu S. Long non-coding RNAs as promising targets for controlling disease vector mosquitoes. INSECT SCIENCE 2024. [PMID: 38783627 DOI: 10.1111/1744-7917.13383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/10/2024] [Accepted: 04/16/2024] [Indexed: 05/25/2024]
Abstract
Hematophagous female mosquitoes are important vectors of numerous devastating human diseases, posing a major public health threat. Effective prevention and control of mosquito-borne diseases rely considerably on progress in understanding the molecular mechanisms of various life activities, and accordingly, the molecules that regulate the various life activities of mosquitoes are potential targets for implementing future vector control strategies. Many long non-coding RNAs (lncRNAs) have been identified in mosquitoes and significant progress has been made in determining their functions. Here, we present a comprehensive overview of the research advances on mosquito lncRNAs, including their molecular identification, function, and interaction with other non-coding RNAs, as well as their synergistic regulatory roles in mosquito life activities. We also highlight the potential roles of competitive endogenous RNAs in mosquito growth and development, as well as in insecticide resistance and virus-host interactions. Insights into the biological functions and mechanisms of lncRNAs in mosquito life activities, viral replication, pathogenesis, and transmission will contribute to the development of novel drugs and safe vaccines.
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Affiliation(s)
- Yujiao Han
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Qian Pu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Ting Fan
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Tianqi Wei
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Yankun Xu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Lu Zhao
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
| | - Shiping Liu
- State Key Laboratory of Resource Insects, Southwest University, Chongqing, 400716, China
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de Freitas A, Rezende F, de Mendonça S, Baldon L, Silva E, Ferreira F, Almeida J, Amadou S, Marçal B, Comini S, Rocha M, Fritsch H, Santos E, Leite T, Giovanetti M, Alcantara LCJ, Moreira L, Ferreira A. The High Capacity of Brazilian Aedes aegypti Populations to Transmit a Locally Circulating Lineage of Chikungunya Virus. Viruses 2024; 16:575. [PMID: 38675917 PMCID: PMC11053879 DOI: 10.3390/v16040575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/30/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024] Open
Abstract
The incidence of chikungunya has dramatically surged worldwide in recent decades, imposing an expanding burden on public health. In recent years, South America, particularly Brazil, has experienced outbreaks that have ravaged populations following the rapid dissemination of the chikungunya virus (CHIKV), which was first detected in 2014. The primary vector for CHIKV transmission is the urban mosquito species Aedes aegypti, which is highly prevalent throughout Brazil. However, the impact of the locally circulating CHIKV genotypes and specific combinations of local mosquito populations on vector competence remains unexplored. Here, we experimentally analyzed and compared the infectivity and transmissibility of the CHIKV-ECSA lineage recently isolated in Brazil among four Ae. aegypti populations collected from different regions of the country. When exposed to CHIKV-infected AG129 mice for blood feeding, all the mosquito populations displayed high infection rates and dissemination efficiency. Furthermore, we observed that all the populations were highly efficient in transmitting CHIKV to a vertebrate host (naïve AG129 mice) as early as eight days post-infection. These results demonstrate the high capacity of Brazilian Ae. aegypti populations to transmit the locally circulating CHIKV-ECSA lineage. This observation could help to explain the high prevalence of the CHIKV-ECSA lineage over the Asian lineage, which was also detected in Brazil in 2014. However, further studies comparing both lineages are necessary to gain a better understanding of the vector's importance in the epidemiology of CHIKV in the Americas.
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Affiliation(s)
- Amanda de Freitas
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Fernanda Rezende
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Silvana de Mendonça
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Lívia Baldon
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Emanuel Silva
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, Brazil; (E.S.); (F.F.); (J.A.); (S.A.); (E.S.); (T.L.)
| | - Flávia Ferreira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, Brazil; (E.S.); (F.F.); (J.A.); (S.A.); (E.S.); (T.L.)
| | - João Almeida
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, Brazil; (E.S.); (F.F.); (J.A.); (S.A.); (E.S.); (T.L.)
| | - Siad Amadou
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, Brazil; (E.S.); (F.F.); (J.A.); (S.A.); (E.S.); (T.L.)
| | - Bruno Marçal
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Sara Comini
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Marcele Rocha
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Hegger Fritsch
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Ellen Santos
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, Brazil; (E.S.); (F.F.); (J.A.); (S.A.); (E.S.); (T.L.)
| | - Thiago Leite
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, 6627-Pampulha, Belo Horizonte 31270-901, Brazil; (E.S.); (F.F.); (J.A.); (S.A.); (E.S.); (T.L.)
| | - Marta Giovanetti
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
- Department of Sciences and Technologies for Sustainable Development and One Health, University of Campus Bio-Medico, 00128 Rome, Italy
| | - Luiz Carlos Junior Alcantara
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Luciano Moreira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
| | - Alvaro Ferreira
- Mosquitos Vetores: Endossimbiontes e Interação Patógeno-Vetor, Instituto René Rachou-Fiocruz, Belo Horizonte 30190-002, Brazil; (A.d.F.); (F.R.); (S.d.M.); (L.B.); (B.M.); (S.C.); (M.R.); (H.F.); (M.G.); (L.C.J.A.); (L.M.)
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Lewis J, Gallichotte EN, Randall J, Glass A, Foy BD, Ebel GD, Kading RC. Intrinsic factors driving mosquito vector competence and viral evolution: a review. Front Cell Infect Microbiol 2023; 13:1330600. [PMID: 38188633 PMCID: PMC10771300 DOI: 10.3389/fcimb.2023.1330600] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 12/08/2023] [Indexed: 01/09/2024] Open
Abstract
Mosquitoes are responsible for the transmission of numerous viruses of global health significance. The term "vector competence" describes the intrinsic ability of an arthropod vector to transmit an infectious agent. Prior to transmission, the mosquito itself presents a complex and hostile environment through which a virus must transit to ensure propagation and transmission to the next host. Viruses imbibed in an infectious blood meal must pass in and out of the mosquito midgut, traffic through the body cavity or hemocoel, invade the salivary glands, and be expelled with the saliva when the vector takes a subsequent blood meal. Viruses encounter physical, cellular, microbial, and immunological barriers, which are influenced by the genetic background of the mosquito vector as well as environmental conditions. Collectively, these factors place significant selective pressure on the virus that impact its evolution and transmission. Here, we provide an overview of the current state of the field in understanding the mosquito-specific factors that underpin vector competence and how each of these mechanisms may influence virus evolution.
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Affiliation(s)
- Juliette Lewis
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Emily N. Gallichotte
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Jenna Randall
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Arielle Glass
- Department of Cellular and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Brian D. Foy
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Gregory D. Ebel
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Rebekah C. Kading
- Center for Vector-borne Infectious Diseases, Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
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7
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de Freitas AC, Rezende FO, de Mendonça SF, Baldon LV, Silva EG, Ferreira FV, de Almeida JP, Amadou SC, Marçal BA, Comini SG, Rocha MN, Fritsch HM, Giovanetti M, Alcantara LC, Moreira LA, Ferreira AG. High capacity of Brazilian Aedes aegypti populations to transmit a locally circulating lineage of Chikungunya virus. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.23.563517. [PMID: 37961153 PMCID: PMC10634738 DOI: 10.1101/2023.10.23.563517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
The global incidence of chikungunya has surged in recent decades, with South America, particularly Brazil, experiencing devastating outbreaks. The primary vector for transmitting CHIKV in urban areas is the mosquito species Aedes aegypti, which is very abundant in Brazil. However, little is known about the impact of locally circulating CHIKV genotypes and specific combinations of mosquito populations on vector competence. In this study, we analyzed and compared the infectivity and transmissibility of a recently isolated CHIKV-ECSA lineage from Brazil among four Ae. aegypti populations collected from different regions of the country. When exposed to CHIKV-infected mice for blood feeding, all mosquito populations showed high infection rates and dissemination efficiency. Moreover, using a mouse model to assess transmission rates in a manner that better mirrors natural cycles, we observed that these populations exhibit highly efficient transmission rates of CHIKV-ECSA. Our findings underscore the robust capability of Brazilian Ae. aegypti populations to transmit the locally circulating CHIKV-ECSA lineage, potentially explaining its higher prevalence compared to the Asian lineage also introduced in Brazil.
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Affiliation(s)
| | | | | | | | | | - Flávia Viana Ferreira
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - João Paulo de Almeida
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Siad Cedric Amadou
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | | | | | - Marta Giovanetti
- Instituto René Rachou-Fiocruz Minas, Belo Horizonte, Brazil
- Sciences and Technologies for Sustainable Development and One Health, University of Campus Bio-Medico, Rome, Italy
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