Juan-Carlos Navarro

Juan-Carlos Navarro
Universidad Internacional SEK · Facultad de Ciencias de la Salud

Ph.D. Entomology, Biologist

About

157
Publications
43,304
Reads
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2,402
Citations
Citations since 2016
41 Research Items
1369 Citations
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2016201720182019202020212022050100150200250300
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Introduction
Risk factors of viral and other emerging diseases. Biodiversity of insect vectors in protected and intervened areas. Molecular epidemiology of zoonotic pathogens and arthropods vectors Molecular taxonomy and ecology of arthropods vectors of zoonoses
Additional affiliations
June 2016 - present
Universidad Internacional SEK
Position
  • Managing Director
October 2012 - June 2016
Central University of Ecuador
Position
  • Research Associate
August 2012 - August 2013
Programa Prometeo, Senescyt
Position
  • Investigador Prometeo

Publications

Publications (157)
Article
Full-text available
According to WHO, FAO, and OIE guidelines, an emerging zoonotic disease can be defined as a zoonosis that is newly recognized or newly evolved, or that has occurred previously but shows an increase of incidence or expansion in geographical, host, or vector range. There are many factors that can provoke or accelerate the emergence of zoonoses, such...
Article
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Non-tuberculous mycobacteria that cannot be identified at the species level represent a challenge for clinical laboratories, as proper species assignment is key to implementing successful treatments or epidemiological studies. We re-identified forty-eight isolates of Ziehl–Neelsen (ZN)- staining-positive “acid-fast bacilli” (AFB), which were isolat...
Article
Full-text available
Non-tuberculous mycobacteria that cannot be identified at the species level represent a challenge for clinical laboratories, as proper species assignment is key to implementing successful treatments or epidemiological studies. We re-identified forty-eight isolates of Ziehl–Neelsen (ZN)-staining-positive “acid-fast bacilli” (AFB), which were isolate...
Article
Full-text available
The COVID-19 pandemic has led to a global disruption of several services, including routine immunizations. This effect has been described in several countries, but there are few detailed studies in Latin America and no reports in Ecuador. Therefore, this work aims to quantify the reduction in routine immunizations for infants during the 2020 COVID-...
Article
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This research aimed to calibrate, for the first time in Ecuador, a Water Quality Index (WQI) to measure the enrichment of nutrients in the Paute River hydrographic basin, south region of Ecuador. It was based on the environmental agreement nº 097-A, which determines water uses considering physical, chemical, and microbiological parameters. We used...
Preprint
Full-text available
Aedes (Stegomyia) albopictus is a mosquito native to Southeast Asia. Currently, it has a wide distribution in America where natural infection with arboviruses of medical and veterinary importance has been reported. In spite of their importance in the transmission of endemic arbovirus, basic information of parameters affecting their vectorial capaci...
Article
Aedes (Stegomyia) albopictus is a mosquito native to Southeast Asia. Currently, it has a wide distribution in America, where natural infection with arboviruses of medical and veterinary importance has been reported. In spite of their importance in the transmission of endemic arbovirus, the basic information of parameters affecting their vectorial c...
Article
Full-text available
In the ablation zone of glacier habitats, cryoconite holes are known to harbor diverse microbial communities, including unique diatom floras distinct from those of surrounding aquatic and terrestrial systems. Besides descriptive studies, little is known about the diversity of cryoconite dia-toms and their response to environmental stressors, partic...
Preprint
The aim of the work was to update the distribution range of Aedes (Stegomyia) albopictus Skuse in the Americas, review the blood-feeding patterns and compare the minimum infection rate (MIR) of the dengue virus (DENV) between studies of vertical and horizontal transmission. The current dis-tribution of Ae. albopictus encompasses 21 countries in the...
Chapter
Full-text available
Malaria has been a major parasitic disease affecting humankind over centuries, with a disproportionate impact among populations, regions of the world and living conditions [1, 2, 3, 4, 5]. Caused by five well-accepted species, Plasmodium falciparum, P. vivax, P. malariae, P. ovale, and P. knowlesi [6] malaria remains a global public health threat d...
Preprint
Full-text available
The aim of the work was to update the distribution range of Aedes (Stegomyia) albopictus Skuse in the Americas, review the blood feeding patterns and compare the minimum infection rate (MIR) between studies of vertical and horizontal transmission of arboviruses. The current distribution of Ae. albopictus encompasses 21 countries in the Americas. In...
Article
Full-text available
Containment laboratories constitute a fundamental basis for the detection and study of infectious agents and represent an essential tool in the face of emerging and re-emerging diseases that increasingly threaten public health with greater risk. It is necessary to strengthen the management and maintaining these containment laboratories, but under t...
Article
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Background: Malaria is a disease caused by hemoparasites of the Plasmodium genus. Non-human primates (NHP) are hosts of Plasmodium sp. around the world. Several studies have demonstrated that Plasmodium sp. emerged from Africa. However, little information is currently available about Plasmodium falciparum in the neotropical NHP and even less in Ecu...
Article
Emerging diseases have significantly marked the last few decades (1-10). The emergence and re-emergence of vector-borne and zoonotic diseases in Africa, Asia, and Latin America which have reshaped these continents' the epidemiological landscape of these continents. The impact of these diseases, the establishment of local transmission in traditional...
Article
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As the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) pandemic continues to expand, healthcare resources globally have been spread thin. Now, the disease is rapidly spreading across South America, with deadly consequences in areas with already weakened public health systems. The Amazon region is particularly susceptible to the widespr...
Article
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The pandemic of the acute respiratory syndrome known as COVID-19 and caused by the SARS-CoV-2 virus, has forced various laboratories around the world to redesign and strengthen their biosafety programs in order to facilitate the diagnosis of the disease and collaborate with epidemiological data for decision-making associated with mitigation and con...
Article
Coronavirus Disease 2019 (COVID‐19), caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS‐CoV‐2), has rapidly spread throughout Latin America, a region swept by multiple previous and ongoing epidemics. There are significant concerns that the arrival of COVID‐19 is currently overlapping with other viruses, particularly dengue, in various...
Article
This research represents the first attempt to assess the spatial and temporal distribution based on micro-meso scales on two species with different host preference habits (anthropophilic vs zoophilic), in the major Leishmaniasis endemic area in Ecuador, tourist locations, and Biosphere reserve. Phlebotomine species, Lutzomyia trapidoi (Fairchild) a...
Article
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This research represents a study in an Amazonian village that has similar structures to others Kichwa Amazonian villages of Ecuador. We evaluated the diversity, ecology, possibility of mos-quitoes/pathogens translocation from forest to urban area, and the vulnerability by potential mosquito vectors of diseases through an intensive and fast method d...
Article
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In the past 5–10 years, Venezuela has faced a severe economic crisis, precipitated by political instability and declining oil revenue. Public health provision has been affected particularly. In this Review, we assess the impact of Venezuela’s health-care crisis on vector-borne diseases, and the spillover into neighbouring countries. Between 2000 an...
Article
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The creation and/or extension of urbanisms towards jungle areas, deficiencies in public services, tourism, hunting practices and exploitation of natural resources have been important factors that influenced the epidemic outbreaks of arboviruses in the Amazon. Limoncocha is a small population of the Kichwa ethnic group created in the 1950's by the L...
Article
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Aedes aegypti is the vector of the arboviruses causing dengue, chikungunya and zika infections in Mexico. However, its presence in public places has not been fully evaluated. In a cemetery from Merida, Yucatan, Mexico, the productivity of Ae. aegypti, the gonotrophic cycle, and the presence of Ae. aegypti females infected with arboviruses were eval...
Article
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INTRODUCTION. Phytotelmata are a botanical group with water-impounding structures formed by non-aquatic plants, such as leaf axils, perforated internodes, stem holes or depressions, rot-holes in tree trunks or branches (tree-holes), flowers, open fruits, among others. These plants offer suitable conditions for aquatic or semi-aquatic animals, in pa...
Article
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Epilithic diatom communities are particularly suitable for the evaluation of freshwater quality. In Ecuador, however, no water quality index includes this biotic parameter. This work is the first attempt in the country to determine the composition of epilithic diatom communities associated with different degrees of eutrophication. This was accompli...
Article
Introducción. La provincia de Pichincha, Ecuador, es un área endémica de leishmaniasis cutánea, en donde se han determinado como vectores los flebotomíneos antropofílicos con infección natural por Leishmania spp. Sin embargo, no se ha evaluado el papel en la transmisión de las especies zoofílicas. Objetivo. Evaluar la infección natural por Leishma...
Chapter
Full-text available
Alphaviruses are enveloped, single-stranded, plus-strand RNA viruses belonging to the Togaviridae family. These are zoonotics and arthropod-borne viruses (mainly mosquitoes) that are distributed nearly worldwide. Many of the New World alphaviruses occur throughout Latin America: Venezuelan and eastern equine encephalitis viruses (VEEV, EEEV) in bot...
Article
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Introduction: The province of Pichincha in Ecuador is an endemic area of cutaneous leishmaniasis, where anthropophilic sand flies, with natural infection by Leishmania, have been reported as vectors. However, the role in transmission of zoophilic species has not been evaluated. Objective: To evaluate natural infection by Leishmania in two zoophilic...
Article
Introduction: The province of Pichincha in Ecuador is an endemic area of cutaneous leishmaniasis, where anthropophilic sand flies with natural infection by Leishmania, have been reported as vectors. However, the role in transmission of zoophilic species has not been evaluated. Objective: To evaluate natural infection by Leishmania in two zoophilic...
Article
Full-text available
Blood-feeding status, gonotrophic cycle, and survival rates of Aedes (Stegmyia) aegypti (L.) was investigated in catholic churches from Merida, Yucatan. Female Ae. aegypti were caught using backpack aspirator during 25 consecutive days in rainy (2015) and dry season (2016). Blood-feeding status was determined by external examination of the abdomen...
Article
It is recorded for the first time in Ecuador Aedes (Howardina) eleanorae Berlin, based on specimens collected as larvae Biological Reserve Colonso-Chalupas, Napo, Ecuadorian Amazon. Ae. eleanorae is the eighth bromelicolous species of the subgenus Howardina reported for Ecuador and the second for Biological Reserve. In addition, an update of the bi...
Article
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Leishmaniasis is a common tropical disease that affects mainly poor people in underdeveloped and developing countries. This largely neglected infection is caused by Leishmania spp, a parasite from the Trypanosomatidae family. This parasitic disease has different clinical manifestations, ranging from localized cutaneous to more harmful visceral form...
Article
Tapeworms Taenia solium and Taenia saginata are the causative agents of taeniasis/cysticercosis. These are diseases with high medical and veterinary importance due to their impact on public health and rural economy in tropical countries. The re-emergence of T. solium as a result of human migration, the economic burden affecting livestock industry,...
Article
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New records of mosquitoes (Diptera: Culicidae) are reported for Ecuador with the extension of their geographical distribution in South America: Aedes (Howardina) fulvithorax (Lutz) in a bromeliad and Culex (Culex) stenolepis Dyar & Knab in a ground pool with vegetation, in the province of Napo (Amazon) and the crater of the volcano Pululaha (Provin...
Article
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Oropouche virus (OROV), genus Orthobunyavirus, family Bunyaviridae, is an important cause of human illness in tropical South America. Herein, we report the isolation, complete genome sequence, genetic characterization, and phylogenetic analysis of an OROV species reassortant, Madre de Dios virus (MDDV), obtained from a sick monkey (Cebus olivaceus...
Article
Full-text available
RESUMEN Aedes albopictus es un competente vector del virus chikungunya, zika y de la mayor parte de los virus de encefalitis equina, capaz de transmitir al menos 24 arbovirus, susceptible a la infección (vertical y horizontalmente) por los serotipos del virus dengue. El objetivo fue realizar un estudio preliminar sobre el comportamiento frente a in...
Article
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The Anopheles species identification is complicated by the presence of several complexes of species and species whose specimens are difficult morphological distinction. We use 393 mitochondrial DNA sequences, Cytochrome Oxidase I (COI) of 36 Neotropical species of Anophelinae deposited in GenBank and by constructing phylogenetic trees using maximum...
Conference Paper
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Cochliomyia hominivorax es una mosca (Diptera: Calliphoridae), que en su fase larvaria es un parásito obligado que se lo conoce comúnmente como Gusano Barrenador del Ganado (GBG). La miasis causada por la mosca se encuentra en la lista de enfermedades de declaración obligatoria y ha sido considerada como un problema en la industria pecuaria y de sa...
Article
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Resumen Navarro JC, Arrivillaga J, Morales D, Ponce P, Cevallos V. 2015. Evaluación rápida de biodiversidad de mosquitos (Diptera: Culicidae) y riesgo en salud ambiental en un área Montana del Chocó Ecuatoriano. Entomotropica 30(16): 160-173. Se evaluó la diversidad alfa de mosquitos y el riesgo a transmisión de patógenos con base en variables de r...
Article
Full-text available
In 2010, an outbreak of febrile illness with arthralgic manifestations was detected at La Estación village, Portuguesa State, Venezuela. The etiologic agent was determined to be Mayaro virus (MAYV), a reemerging South American alphavirus. A total of 77 cases was reported and 19 were confirmed as seropositive. MAYV was isolated from acute-phase seru...
Research
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Aedes aegypti and Aedes albopictus, two important vectors of the dengue and chikungunya viruses to humans, often come in contact in their invasive ranges. In these circumstances, a number of factors are thought to influence their population dynamics, including resource competition among the larval stages, prevailing environmental conditions and rep...
Article
Full-text available
Aedes aegypti and Aedes albopictus, two important vectors of the dengue and chikungunya viruses to humans, often come in contact in their invasive ranges. In these circumstances, a number of factors are thought to influence their population dynamics, including resource competition among the larval stages, prevailing environmental conditions and rep...
Article
Full-text available
Two new records of Sabethes mosquitoes (Culicidae: Nematocera) are reported for Ecuador with the respective extension of their geographical distribution in the Neotropics: Sabethes intermedius Lutz and Sabethes soperi Lane & Cerqueira, from the provinces of Napo (Amazon) into the Natural Reserve of Colonso-Chalupas at 1,200 m altitude, beside Tena...
Article
Full-text available
Phylogenetic analysis of yellow fever virus (YFV) strains isolated from Venezuela strongly supports YFV maintenance in situ in Venezuela, with evidence of regionally independent evolution within the country. However, there is considerable YFV movement from Brazil to Venezuela and between Trinidad and Venezuela.
Article
Full-text available
Phylogenetic analysis of yellow fever virus (YFV) strains isolated from Venezuela strongly supports YFV maintenance in situ in Venezuela, with evidence of regionally independent evolution within the country. However, there is considerable YFV movement from Brazil to Venezuela and between Trinidad and Venezuela.
Data
Full-text available
Strains of yellow fever virus used in this study.
Article
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Alpha diversity of mosquitoes was evaluated and the risk of pathogen transmission based on variables of rapid determination. Sampling was conducted in: urban-rural, rural-rural and jungle areas of three provinces. A total of 22 species were collected: 59 % are proven vectors; 45.5 % were captured as adults, 90.9 % as immature phases; two species we...
Article
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RESUMEN Se reportan Haemagogus anastasionis Dyar y Hg. equinus Theobald, con base en capturas realizadas en un área rural del municipio Roscio, estado Guárico y se señala por primera vez la presencia de Hg. janthinomys para la subregión de los Llanos Centrales. Este hallazgo, constituye un factor de riesgo potencial en la emergencia y transmisión d...
Article
Full-text available
A longitudinal study was conducted in 18 communities or "shabonos" in the Yanomami inhabited Ocamo and Mavaca regions in the Alto Orinoco municipality between June 1998 and December 2000. CDC light traps were placed inside dwellings to catch mosquitoes attracted to humans protected by mosquito nets between 1900 and 0600 hours. A total of 4.635 culi...
Article
Full-text available
Phylogenetic relationships in the genus Psorophora were examined based on a cladistic analysis of 66 morphological characters (fourth instar larvae, pupae, males and females) of 29 species available from the 45 species reported in the genus, representing the three subgenera. The ingroup species were: five Psorophora (10 spp total, 50%), seven Grabh...