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[PMID]:29256280
[Au] Autor:Szoke K; Sándor AD; Boldogh SA; Görföl T; Votýpka J; Takács N; Estók P; Kováts D; Corduneanu A; Molnár V; Kontschán J; Hornok S
[Ad] Endereço:1 Department of Parasitology and Zoology, University of Veterinary Medicine , István u. 2, H-1078 Budapest , Hungary.
[Ti] Título:DNA of free-living bodonids (Euglenozoa: Kinetoplastea) in bat ectoparasites: potential relevance to the evolution of parasitic trypanosomatids.
[So] Source:Acta Vet Hung;65(4):531-540, 2017 12.
[Is] ISSN:0236-6290
[Cp] País de publicação:Hungary
[La] Idioma:eng
[Ab] Resumo:Kinetoplastids are flagellated protozoa, including principally free-living bodonids and exclusively parasitic trypanosomatids. In the most species-rich genus, Trypanosoma, more than thirty species were found to infect bats worldwide. Bat trypanosomes are also known to have played a significant role in the evolution of T. cruzi, a species with high veterinary medical significance. Although preliminary data attested the occurrence of bat trypanosomes in Hungary, these were never sought for with molecular methods. Therefore, amplification of an approx. 900-bp fragment of the 18S rRNA gene of kinetoplastids was attempted from 307 ixodid and 299 argasid ticks collected from bats, and from 207 cimicid bugs collected from or near bats in Hungary and Romania. Three samples, one per each bat ectoparasite group, were PCR positive. Sequencing revealed the presence of DNA from free-living bodonids (Bodo saltans and neobodonids), but no trypanosomes were detected. The most likely source of bodonid DNA detected here in engorged bat ectoparasites is the blood of their bat hosts. However, how bodonids were acquired by bats, can only be speculated. Bats are known to drink from freshwater bodies, i.e. the natural habitats of B. saltans and related species, allowing bats to ingest bodonids. Consequently, these results suggest that at least the DNA of bodonids might pass through the alimentary mucosa of bats into their circulation. The above findings highlight the importance of studying bats and other mammals for the occurrence of bodonids in their blood and excreta, with potential relevance to the evolution of free-living kinetoplastids towards parasitism.
[Mh] Termos MeSH primário: Evolução Biológica
Quirópteros/parasitologia
DNA/genética
Ectoparasitoses/veterinária
Euglenozoários/genética
Trypanosomatina/genética
[Mh] Termos MeSH secundário: Animais
Cimicidae/parasitologia
Ectoparasitoses/parasitologia
Filogeografia
Carrapatos/parasitologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
9007-49-2 (DNA)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171220
[St] Status:MEDLINE
[do] DOI:10.1556/004.2017.051


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[PMID]:27779467
[Au] Autor:Meltzer E; Paran Y; Lustig Y; Stienlauf S; Weinberger M; Schwartz E
[Ti] Título:Travel-Related Tick-Borne Encephalitis, Israel, 2006-2014.
[So] Source:Emerg Infect Dis;23(1):119-121, 2017 01.
[Is] ISSN:1080-6059
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:During 2006-2014, four tick-borne encephalitis (TBE) cases occurred among Israeli travelers. We calculated TBE incidence at 321.0, 45.0, 13.2, and 7.5 cases/100,000 travelers/year of travel to Sweden, Switzerland, Austria, and Germany, respectively. TBE incidence among travelers to these destinations appears to justify TBE vaccination in accordance with World Health Organization recommendations.
[Mh] Termos MeSH primário: Vetores Aracnídeos/virologia
Encefalite Transmitida por Carrapatos/epidemiologia
Encefalite Transmitida por Carrapatos/transmissão
Carrapatos/virologia
Viagem
[Mh] Termos MeSH secundário: Animais
Áustria/epidemiologia
Vírus da Encefalite Transmitidos por Carrapatos/patogenicidade
Vírus da Encefalite Transmitidos por Carrapatos/fisiologia
Encefalite Transmitida por Carrapatos/prevenção & controle
Alemanha/epidemiologia
Seres Humanos
Incidência
Israel/epidemiologia
Suécia/epidemiologia
Suíça/epidemiologia
Vacinação
Vacinas Virais/administração & dosagem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Viral Vaccines)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180209
[Lr] Data última revisão:
180209
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161026
[St] Status:MEDLINE
[do] DOI:10.3201/eid2301.160888


  3 / 10340 MEDLINE  
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[PMID]:28449722
[Au] Autor:Bilgic HB; Bakirci S; Kose O; Unlu AH; Hacilarlioglu S; Eren H; Weir W; Karagenc T
[Ad] Endereço:Department of Parasitology, University of Adnan Menderes, Faculty of Veterinary Medicine, 09016, Isikli/Aydin, Turkey. hbilgic@adu.edu.tr.
[Ti] Título:Prevalence of tick-borne haemoparasites in small ruminants in Turkey and diagnostic sensitivity of single-PCR and RLB.
[So] Source:Parasit Vectors;10(1):211, 2017 Apr 27.
[Is] ISSN:1756-3305
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Tick-borne haemoparasitic diseases (TBHDs), caused by Theileria, Babesia, Anaplasma and Ehrlichia, are common in regions of the world where the distributions of host, pathogen and vector overlap. Many of these diseases threaten livestock production and some also represent a concern to human public health. The primary aim of this study was to determine the prevalence of the above-mentioned pathogens in a large number of blood samples (n = 1979) collected from sheep (n = 1727) and goats (n = 252) in Turkey. A secondary aim was to assess the diagnostic sensitivity of a number of species-specific polymerase chain reaction (PCR) tests and the reverse line blotting (RLB) assay. DNA samples were screened using species-specific PCR for the presence of Theileria ovis, Theileria sp. MK, T. lestoquardi, T. uilenbergi, T. luwenshuni, Babesia ovis, Anaplasma ovis and A. phagocytophilum while RLB was undertaken to test for the presence of all known Theileria, Babesia, Anaplasma and Ehrlichia species. The diagnostic sensitivity of these two approaches was then compared in terms of their ability to detect single species and mixed infections. RESULTS: Overall, 84 and 74.43% of the small ruminants sampled were identified as hosting one or more pathogen(s) by species-specific PCR and RLB respectively. The presence of Theileria sp. OT1, T. luwenshuni and T. uilenbergi in Turkey was revealed for the first time while the presence of Babesia motasi, B. crassa and T. separata in Turkish small ruminants was confirmed using molecular methods. A high prevalence of mixed infection was evident, with PCR and RLB approaches indicating that 52.24 and 35.42% of animals were co-infected with multiple species, respectively. More than 80% of the mixed infections contained T. ovis and/or A. ovis. The RLB approach was found to be capable of detecting mixed infections with species such as Theileria sp. OT1, Theileria sp. OT3, T. separata, B. crassa and Babesia spp. CONCLUSION: The results indicated that pathogens causing TBHDs are highly prevalent in sheep and goats in Turkey. The diagnostic sensitivity of species-specific single PCR was generally higher than that of RLB. However, the latter approach was still capable of identifying a high proportion of individuals containing mixed-species infections. The use of species-specific single PCR is recommended to accurately estimate pathogen prevalence and to identify co-infected hosts.
[Mh] Termos MeSH primário: Técnicas de Diagnóstico Molecular/métodos
Infecções Protozoárias em Animais/diagnóstico
Infecções Protozoárias em Animais/epidemiologia
Doenças Transmitidas por Carrapatos/veterinária
[Mh] Termos MeSH secundário: Animais
Doenças das Cabras/diagnóstico
Doenças das Cabras/epidemiologia
Cabras
Hibridização de Ácido Nucleico/métodos
Reação em Cadeia da Polimerase/métodos
Prevalência
Sensibilidade e Especificidade
Análise de Sequência de DNA
Ovinos
Doenças dos Ovinos/diagnóstico
Doenças dos Ovinos/epidemiologia
Doenças Transmitidas por Carrapatos/diagnóstico
Doenças Transmitidas por Carrapatos/epidemiologia
Carrapatos
Turquia/epidemiologia
[Pt] Tipo de publicação:COMPARATIVE STUDY; EVALUATION STUDIES; JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180109
[Lr] Data última revisão:
180109
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1186/s13071-017-2151-3


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[PMID]:27773826
[Au] Autor:Noden BH; Loss SR; Maichak C; Williams F
[Ad] Endereço:Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74074, USA. Electronic address: bruce.noden@okstate.edu.
[Ti] Título:Risk of encountering ticks and tick-borne pathogens in a rapidly growing metropolitan area in the U.S. Great Plains.
[So] Source:Ticks Tick Borne Dis;8(1):119-124, 2017 01.
[Is] ISSN:1877-9603
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The prevalence of tick-borne diseases has increased dramatically in many urban areas of the U.S., yet little is known about the ecology of ticks and tick-borne pathogens in relation to characteristics of North American urban and suburban landscapes. This study aimed to begin identification of the risk of encountering ticks and tick-borne pathogens within a rapidly expanding metropolitan area in the U.S. Great Plains region. Ten sites across Oklahoma City, Oklahoma were selected for tick sampling based on presence of tick habitat and level of urbanization intensity. Sampling was conducted using CO traps and flagging in June, July and October 2015. A total of 552 ticks were collected from eight of the ten sampled greenspaces. The majority of ticks collected in summer were Amblyomma americanum (N=534 (97.8%)), followed by Dermacentor variabilis (N=10 (1.8%)) and Amblyomma maculatum (N=2 (0.3%)). Ixodes scapularis adult females (N=4) and nymphal A. americanum (N=2) were also collected in October 2015. Tick species diversity was highest in sites with >15% of the surrounding landscape composed of undeveloped land. Rickettsia sp. (including R. amblyommii and 'Candidatus R. andeanae'), Ehrlichia chaffeensis and/or E. ewingii were detected in tick pools from all eight sites where ticks were found. Our data suggest that the risk of encountering ticks and tick-borne pathogens exists throughout the Oklahoma City metropolitan area and that tick populations are likely influenced by urbanization intensity. Continued research is needed to clarify the full range of abiotic and biotic features of urban landscapes that influence the risk of encountering ticks and transmitting tick-borne diseases.
[Mh] Termos MeSH primário: Doenças Transmitidas por Carrapatos/epidemiologia
Carrapatos
População Urbana
[Mh] Termos MeSH secundário: Animais
Vetores Aracnídeos/microbiologia
Seres Humanos
Ixodidae/microbiologia
Oklahoma/epidemiologia
Fatores de Risco
Doenças Transmitidas por Carrapatos/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171228
[Lr] Data última revisão:
171228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE


  5 / 10340 MEDLINE  
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[PMID]:27771334
[Au] Autor:Aenishaenslin C; Bouchard C; Koffi JK; Ogden NH
[Ad] Endereço:Groupe de Recherche en Épidémiologie des Zoonoses et Santé Publique (GREZOSP), Faculté de médecine vétérinaire, Université de Montréal, CP 5000, Saint-Hyacinthe, J2S 7C6, Québec, Canada; Department of Epidemiology, Biostatistics and Occupational Health, McGill University, 1140 Pine Avenue, Montreal
[Ti] Título:Exposure and preventive behaviours toward ticks and Lyme disease in Canada: Results from a first national survey.
[So] Source:Ticks Tick Borne Dis;8(1):112-118, 2017 01.
[Is] ISSN:1877-9603
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Lyme disease (LD) risk is increasing in Canada. In 2014, the government of Canada launched a national communication campaign to raise awareness and promote the adoption of individual preventive behaviours toward ticks and LD. The objectives of this study were to evaluate and compare the adoption of LD preventive behaviours and the exposure to tick bites of Canadians in the five main targeted regions (British Columbia, Prairie provinces, Ontario, Quebec and the Atlantic provinces). A national survey was conducted in December 2014 (n=2876) to collect data on LD awareness, behaviours and risk factors. Overall, the proportion of respondents reporting tick exposure was high (20%). The results suggest that even though LD awareness was found to be high (with only 12% of the respondents reporting that they never heard about LD), less than half of the Canadians who heard about it have adopted specific preventive behaviours toward tick bites, such as regular tick checks (reported by 52%), protective clothing (50%), using tick repellent (41%) or shower or bath (41%) after visiting a wooded area in a LD risk area. Moreover, significant differences were found between regions, gender, age groups and dog ownership status, regarding preventive behaviours and factors of exposure. A high level of knowledge of Lyme disease, living in the Prairie region, as well as having found a tick on oneself or a relative, were found to be associated with the adoption of preventive behaviours. This study underlines the importance to take into account specific regional characteristics of risk and to maintain public health communication efforts through time in order to increase the adoption of preventive behaviours of Canadians.
[Mh] Termos MeSH primário: Conhecimentos, Atitudes e Prática em Saúde
Doença de Lyme/prevenção & controle
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Animais
Canadá/epidemiologia
Coleta de Dados
Feminino
Seres Humanos
Doença de Lyme/epidemiologia
Masculino
Meia-Idade
Fatores Socioeconômicos
Inquéritos e Questionários
Picadas de Carrapatos/prevenção & controle
Controle de Ácaros e Carrapatos
Carrapatos
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171228
[Lr] Data última revisão:
171228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE


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[PMID]:28457353
[Au] Autor:Ismail N; McBride JW
[Ad] Endereço:Departments of Pathology and Immunology, School of Medicine, University of Pittsburgh, 3550 Terrace Street, Scaife Hall, Room 739, Pittsburgh, PA 15217, USA. Electronic address: ismailn@upmc.edu.
[Ti] Título:Tick-Borne Emerging Infections: Ehrlichiosis and Anaplasmosis.
[So] Source:Clin Lab Med;37(2):317-340, 2017 Jun.
[Is] ISSN:1557-9832
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Human ehrlichiosis and anaplasmosis are acute febrile tick-borne infectious diseases caused by various members from the genera Ehrlichia and Anaplasma. Ehrlichia chaffeensis is the major etiologic agent of human monocytotropic ehrlichiosis (HME), while Anaplasma phagocytophilum is the major cause of human granulocytic anaplasmosis (HGA). The clinical manifestations of HME and HGA ranges from subclinical to potentially life-threatening diseases associated with multi-organ failure. Macrophages and neutrophils are the major target cells for Ehrlichia and Anaplasma, respectively. The threat to public health is increasing with newly emerging ehrlichial and anaplasma agents, yet vaccines for human ehrlichioses and anaplasmosis are not available, and therapeutic options are limited. This article reviews recent advances in the understanding of HME and HGA.
[Mh] Termos MeSH primário: Anaplasma phagocytophilum
Anaplasmose
Ehrlichia
Ehrlichiose
Carrapatos/microbiologia
[Mh] Termos MeSH secundário: Anaplasmose/complicações
Anaplasmose/diagnóstico
Anaplasmose/epidemiologia
Animais
Ehrlichiose/complicações
Ehrlichiose/diagnóstico
Ehrlichiose/epidemiologia
Seres Humanos
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171207
[Lr] Data última revisão:
171207
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE


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[PMID]:28462753
[Au] Autor:Tulloch JSP; McGinley L; Sánchez-Vizcaíno F; Medlock JM; Radford AD
[Ad] Endereço:NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool,Liverpool,UK.
[Ti] Título:The passive surveillance of ticks using companion animal electronic health records.
[So] Source:Epidemiol Infect;145(10):2020-2029, 2017 07.
[Is] ISSN:1469-4409
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Ticks represent a large global reservoir of zoonotic disease. Current surveillance systems can be time and labour intensive. We propose that the passive surveillance of companion animal electronic health records (EHRs) could provide a novel methodology for describing temporal and spatial tick activity. A total of 16 58 857 EHRs were collected over a 2-year period (31 March 2014 and 29 May 2016) from companion animals attending a large sentinel network of 192 veterinary clinics across Great Britain (the Small Animal Veterinary Surveillance Network - SAVSNET). In total, 2180 EHRs were identified where a tick was recorded on an animal. The relative risk of dogs presenting with a tick compared with cats was 0·73 (95% confidence intervals 0·67-0·80). The highest number of tick records were in the south central regions of England. The presence of ticks showed marked seasonality with summer peaks, and a secondary smaller peak in autumn for cats; ticks were still being found throughout most of Great Britain during the winter. This suggests that passive surveillance of companion animal EHRs can describe tick activity temporally and spatially in a large cohort of veterinary clinics across Great Britain. These results and methodology could help inform veterinary and public health messages as well as increase awareness of ticks and tick-borne diseases in the general population.
[Mh] Termos MeSH primário: Doenças do Gato/epidemiologia
Doenças do Cão/epidemiologia
Registros Eletrônicos de Saúde/utilização
Monitoramento Epidemiológico/veterinária
Vigilância de Evento Sentinela/veterinária
Carrapatos/fisiologia
[Mh] Termos MeSH secundário: Animais
Doenças do Gato/parasitologia
Gatos
Doenças do Cão/parasitologia
Cães
Animais de Estimação
Espécies Sentinelas/parasitologia
Doenças Transmitidas por Carrapatos/epidemiologia
Doenças Transmitidas por Carrapatos/parasitologia
Reino Unido/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171125
[Lr] Data última revisão:
171125
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE
[do] DOI:10.1017/S0950268817000826


  8 / 10340 MEDLINE  
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[PMID]:27772539
[Au] Autor:Zeman P
[Ad] Endereço:Medical Laboratories,Prague,Czech Republic.
[Ti] Título:Cyclic patterns in the central European tick-borne encephalitis incidence series.
[So] Source:Epidemiol Infect;145(2):358-367, 2017 01.
[Is] ISSN:1469-4409
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Tick-borne encephalitis (TBE) is peculiar due to its unstable dynamics with profound inter-annual fluctuations in case numbers - a phenomenon not well understood to date. Possible reasons - apart from variable human contact with TBE foci - include external factors, e.g. climatic forcing, autonomous oscillations of the disease system itself, or a combined action of both. Spectral analysis of TBE data from six regions of central Europe (CE) revealed that the ostensibly chaotic dynamics can be explained in terms of four superposed (quasi-)periodical oscillations: a quasi-biennial, triennial, pentennial, and a decadal cycle. These oscillations exhibit a high degree of regularity and synchrony across CE. Nevertheless, some amplitude and phase variations are responsible for regional differences in incidence patterns. In addition, periodic changes occur in the degree of synchrony in the regions: marked in-phase periods alternate with rather off-phase periods. Such a feature in the disease dynamics implies that it arises as basically diverging self-oscillations of local disease systems which, at intervals, receive synchronizing impulses, such as periodic variations in food availability for key hosts driven by external factors. This makes the disease dynamics synchronized over a large area during peaks in the synchronization signal, shifting to asynchrony in the time in between.
[Mh] Termos MeSH primário: Encefalite Transmitida por Carrapatos/epidemiologia
Carrapatos/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Animais
Feminino
Seres Humanos
Incidência
Masculino
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:171125
[Lr] Data última revisão:
171125
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE


  9 / 10340 MEDLINE  
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[PMID]:28991904
[Au] Autor:Kamiya T; Greischar MA; Mideo N
[Ad] Endereço:Department of Ecology & Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada.
[Ti] Título:Epidemiological consequences of immune sensitisation by pre-exposure to vector saliva.
[So] Source:PLoS Negl Trop Dis;11(10):e0005956, 2017 Oct.
[Is] ISSN:1935-2735
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Blood-feeding arthropods-like mosquitoes, sand flies, and ticks-transmit many diseases that impose serious public health and economic burdens. When a blood-feeding arthropod bites a mammal, it injects saliva containing immunogenic compounds that facilitate feeding. Evidence from Leishmania, Plasmodium and arboviral infections suggests that the immune responses elicited by pre-exposure to arthropod saliva can alter disease progression if the host later becomes infected. Such pre-sensitisation of host immunity has been reported to both exacerbate and limit infection symptoms, depending on the system in question, with potential implications for recovery. To explore if and how immune pre-sensitisation alters the effects of vector control, we develop a general model of vector-borne disease. We show that the abundance of pre-sensitised infected hosts should increase when control efforts moderately increase vector mortality rates. If immune pre-sensitisation leads to more rapid clearance of infection, increasing vector mortality rates may achieve greater than expected disease control. However, when immune pre-sensitisation prolongs the duration of infection, e.g., through mildly symptomatic cases for which treatment is unlikely to be sought, vector control can actually increase the total number of infected hosts. The rising infections may go unnoticed unless active surveillance methods are used to detect such sub-clinical individuals, who could provide long-lasting reservoirs for transmission and suffer long-term health consequences of those sub-clinical infections. Sensitivity analysis suggests that these negative consequences could be mitigated through integrated vector management. While the effect of saliva pre-exposure on acute symptoms is well-studied for leishmaniasis, the immunological and clinical consequences are largely uncharted for other vector-parasite-host combinations. We find a large range of plausible epidemiological outcomes, positive and negative for public health, underscoring the need to quantify how immune pre-sensitisation modulates recovery and transmission rates in vector-borne diseases.
[Mh] Termos MeSH primário: Vetores Artrópodes/imunologia
Modelos Biológicos
Saliva/imunologia
[Mh] Termos MeSH secundário: Animais
Culicidae/imunologia
Interações Hospedeiro-Parasita/imunologia
Seres Humanos
Tolerância Imunológica
Mordeduras e Picadas de Insetos/imunologia
Psychodidae/imunologia
Carrapatos/imunologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171109
[Lr] Data última revisão:
171109
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171010
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pntd.0005956


  10 / 10340 MEDLINE  
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[PMID]:28968195
[Au] Autor:Roth TM; Foley J; Wright S
[Ad] Endereço:1 Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California , Davis, California.
[Ti] Título:Abiotic and Biotic Contributors to Support Inter-Epidemic Francisella tularensis in an Agricultural Peri-Urban Environment.
[So] Source:Vector Borne Zoonotic Dis;17(11):764-772, 2017 Nov.
[Is] ISSN:1557-7759
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:To characterize the inter-epidemic ecology of Francisella tularensis, we surveyed vertebrates and invertebrates for the abundance, spatial distribution, and status of infection at a site in northern California that had evidence of endemic type B tularemia. We collected 2910 mosquitoes, 77 biting flies, 704 ticks, 115 mammals, and 1911 aquatic invertebrates in 2013-2014. Real-time PCR on all mosquitoes, 40 biting flies, 113 aquatic invertebrates, and 650 ticks did not detect F. tularensis DNA. Indirect enzyme linked immunosorbent assay (ELISA) on 109 mammals revealed 2 (of 2, 100%) seropositive feral cats, 1 (of 24, 4.5%) seropositive black rat, and 5 (of 10, 50%) seropositive Virginia opossums. A riparian reserve, ∼1 km from the primate research center, had the highest seroprevalence in mammals and the highest capture success for invertebrate vectors whereas opossums, cats, and ground squirrels in close proximity to the primate center had high seroprevalence and abundant fleas. Well-vegetated regions with standing water appeared to be ideal habitats for biotic components of tularemia enzootic persistence. Mesocarnivores may facilitate the spread of F. tularensis, and high densities of rodents and their fleas may be a mechanism for amplification and spillover.
[Mh] Termos MeSH primário: Francisella tularensis/isolamento & purificação
Tularemia/epidemiologia
Tularemia/microbiologia
[Mh] Termos MeSH secundário: Agricultura
Animais
California/epidemiologia
Ceratopogonidae/microbiologia
DNA Bacteriano/genética
Dípteros/microbiologia
Reservatórios de Doenças/microbiologia
Reservatórios de Doenças/parasitologia
Ecossistema
Feminino
Seres Humanos
Insetos Vetores
Masculino
Mamíferos/microbiologia
Fatores de Risco
Carrapatos/microbiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (DNA, Bacterial)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171109
[Lr] Data última revisão:
171109
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171003
[St] Status:MEDLINE
[do] DOI:10.1089/vbz.2017.2148



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