GHTM

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Home / Archives for Vieira ML

Borrelia burgdorferi sensu lato in humans in a rural area of Paraná State, Brazil

  • Authors: Carreira T, Freitas JC, Gonçalves D, Moura RA, Nunes M, Vidotto O, Vieira ML
  • Publication Year: 2015
  • Journal: Brazilian Journal of Microbiology
  • Link: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200571

This study describes the detection of Borrelia garinii and Borrelia burgdorferi sensu stricto (s.s.) in Brazilian individuals using PCR and DNA sequencing. Our results suggest that these species are emerging pathogens in this country, and additional studies are necessary to determine the epidemiological characteristics of this disease in Brazil.
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Tick-borne bacteria and protozoa detected in ticks collected from domestic animals and wildlife in central and southern Portugal

  • Authors: Azevedo F, Campino L, Cotão AJ, Maia C, Nunes M, Parreira R, Pereira A, Vieira ML
  • Publication Year: 2017
  • Journal: Ticks and Tick-Borne Diseases
  • Link: https://www.sciencedirect.com/science/article/pii/S1877959X17300717?via%3Dihub

Ticks are vectors of many human and animal pathogens. The aim of this study was to screen bacteria and protozoa from ticks infesting domestic animals and wildlife collected in central and southern Portugal. A total of 593 ticks, comprising 465 (78.4%) adults, 122 (20.6%) nymphs, and six (1.0%) larvae, were collected from 283 hosts of […]
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Development and evaluation of a two-step multiplex TaqMan real-time PCR assay for detection/quantification of different genospecies of Borrelia burgdorferi sensu lato

  • Authors: Nunes M, Parreira R, Carreira T, Inácio J, Vieira ML
  • Publication Year: 2017
  • Journal: Ticks and Tick-Borne Diseases
  • Link: https://www.sciencedirect.com/science/article/pii/S1877959X16302771

Nowadays, at least four clinically important B. burgdorferi sensu lato (s.l.) genospecies (B. afzelii, B. garinii, B. burgdorferi sensu stricto (s.s.) and B. lusitaniae) circulate in Portugal. Each genospecies has a different tropism that resuls in a diverse array of clinical manifestations. The standard diagnostic procedure used is normally simple, nevertheless, during the “window-period” phase, […]
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Multiple Phlebovirus (Bunyaviridae) genetic groups detected in Rhipicephalus, Hyalomma and Dermacentor ticks from southern Portugal

  • Authors: Campino L, Cotão AJ, Esteves A, Figueira L, Maia C, Nunes M, Parreira R, Pereira A, Vieira ML
  • Publication Year: 2017
  • Journal: Ticks and Tick-Borne Diseases
  • Link: https://www.sciencedirect.com/science/article/pii/S1877959X16301625

In the last decade, various research groups have reported a large diversity of new tick-borne phleboviruses, mostly prompted by the discovery of important human pathogens such as the Heartland and severe fever with thrombocytopenia syndrome viruses. Since these analyses have rarely been conducted using ticks collected from Southern Europe, this study was carried out so […]
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First isolates of Leptospira spp, from rodents captured in Angola

  • Authors: Carreira T, Fortes-Gabriel E, Vieira ML
  • Publication Year: 2016
  • Journal: American Journal of Tropical Medicine and Hygiene
  • Link: http://www.ajtmh.org/content/journals/10.4269/ajtmh.15-0027

Rodents play an important role in the transmission of pathogenic Leptospira spp. However, in Angola, neither the natural reservoirs of these spirochetes nor leptospirosis diagnosis has been considered. Regarding this gap, we captured rodents in Luanda and Huambo provinces to identify circulating Leptospira spp. Rodent kidney tissue was cultured and DNA amplified and sequenced. Culture […]
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About GHTM

GHTM is a R&D Unit that brings together researchers with a track record in Tropical Medicine and International & Global Health. It aims at strengthening Portugal's role as a leading partner in the development and implementation of a global health research agenda. Our evidence-based interventions contribute to the promotion of equity in health and to improve the health of populations.

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