Browsing by Author "Luz, T."
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- Borreliose de Lyme: descrição clinica e laboratorial em doentes portuguesesPublication . Lopes de Carvalho, I.; Luz, T.; Gomes, M.S.; Parreira, P.; Núncio, M.S.Borrelia burgdorferi sensu lato (s.l.) é o agente etiológico da borreliose de Lyme (BL), uma das doenças transmitidas por carraças com maior impacto em Portugal. No Homem, B. lusitaniae está inequivocamente associada a causar doença no Homem, com dois casos clínicos reportados.
- Clinical presentaion and laboratory findings for the first autochthonous cases of Dengue fever in Madeira island, Portugal, October 2012Publication . Alves, M.J.; Fernandes, P.L.; Amaro, F.; Osório, H.; Luz, T.; Parreira, P.; Andrade, G.; Zé-Zé, Líbia; Zeller, H.
- Diagnóstico imunológico de doenças associadas a vectores existentes em PortugalPublication . Alves, M.J.; Luz, T.; Santos, A.S.; De Sousa, R.; Lopes de Carvalho, I.; Zé-Zé, Líbia; Amaro, F.; Parreira, P.; Núncio, M.S.
- Distribution, abundance and ecology of ticks in Portugal mainland: data from five years of a surveillance program REVIVEPublication . Santos-Silva, M.M.; Santos, A.; Lopes de Carvalho, I.; Sousa, R.; Luz, T.; Parreira, L.; Chainho, L.; Gomes, M.S.; Milhano, N.; Osório, H.; Alves, M.J.; Núncio, M.S.; REVIVE WorkgroupREVIVE (National Network for Vector Surveillance) aims to: i) Monitor the activity of hematophagous arthropods; ii) Characterize the species and its seasonal occurrence; iii) Identify important pathogens in Public Health, depending on the density of the vectors, the level of infection or the introduction of exotic species to alert for control measures.
- First autochthonous dengue virus infections in Madeira Island, Portugal, in 2012.Publication . Zé-Zé, Líbia; Amaro, F.; Osório, H.C.; Parreira, P.; Luz, T.; Andrade, G.; Fernandes, P.L.; Alves, M.J.
- Human case of West Nile neuroinvasive disease in Portugal, summer 2015Publication . Zé-Zé, Líbia; Proença, P.; Osório, H.C.; Gomes, S.; Luz, T.; Parreira, P.; Fevereiro, M.; Alves, M.J.A case of West Nile virus (WNV) infection was reported in the Algarve region, Portugal, in the first week of September 2015. WNV is known to circulate in Portugal, with occasional reports in horses and birds (2004 to 2011) and very sporadically human cases (in 2004 and in 2010). Here we present the clinical and laboratory aspects related to the first human case of West Nile neuroinvasive disease reported in Portugal.
- Infecção por vírus West Nile [Flavivírus] em Portugal. Considerações acerca de um caso clínico de síndrome febril com exantemaPublication . Alves, M.J.; Poças, J.M.; Luz, T.; Amaro, F.; Zé-Zé, Líbia; Osório, H.O vírus West Nile [WN] é um flavivírus transmitido por mosquitos e agente etiológico de febre e de doença neuroinvasiva. O vírus WN mantém-se na natureza em ciclos enzoóticos que envolvem mosquitos ornitofílicos, como vectores primários, e algumas espécies de aves como reservatório primário. A sua presença em Portugal é conhecida, surgindo esporadicamente alguns casos de infecção em equinos e humanos. Em 2010 foi identificado um caso humano detectado em toda a época de actividade de mosquitos nesse ano. Neste caso a paciente apresentava quadro febril com hiperpirexia muito irregular, por vezes com calafrios e picos de febre superiores a 39ºC, cefaleias, mialgias, adinamia e astenia acentuada, adenomegalias volumosas e dolorosas na região cervical, assim como exantema eritematoso difuso com maior expressão no tronco. Os exames laboratoriais identificaram seroconversão de anticorpos IgM contra o vírus West Nile.
- A nationwide surveillance on tick-borne pathogens, 2011-2015, PortugalPublication . de Sousa, R.; Santos, A.S.; Santos-Silva, M.M.; Luz, T.; Parreira, P.; Bessa, S.; Núncio, M.S.; Lopes de Carvalho, I.; REVIVE Workgroup
- REVIVE, a surveillance program on vectors and vector-borne pathogens in Portugal - four year experience on ticksPublication . Santos, A.S.; Santos Silva, M.; Lopes de Carvalho, I.; Milhano, N.; Chaínho, L.; Luz, T.; Parreira, P.; Gomes, S.; De Sousa, R.; Núncio, M.S.; REVIVE WorkgrupREVIVE is a national wide surveillance program on vector and vector-borne agents implement and coordinate by the National Institute of Health (CEVDI/INSA) in collaboration with other institutions of the Health Ministry. The programme started in 2008 with the surveillance of mosquitoes and later in 2011 was extended to ticks. The main goals of this project are to collect and identify vectors, updating our knowledge in the distribution, hostassociations, seasonality and abundance of the Portuguese species. Additionally this project contributes for monitoring the introduction of exotic vector species. This work regards the 4-year REVIVE studies on ticks and Borrelia/Rickettsia surveillance, among other tick-borne agents, discussing the established circuits, obtained results and practical interventions. Over 29.000 ticks were collected on hosts or by flagging vegetation from 168 (60.4%) municipalities of mainland Portugal. Collection in humans reached the 583 specimens. In total, 13 autochthonous tick species were identified, including Dermacentor marginatus; D. reticulatus; Haemaphysalis punctata; Hyalomma lusitanicum; H. marginatum; Ixodes canisuga; I. hexagonus; I. ricinus; I. ventalloi; Rhipicephalus annulatus; R. bursa; R. pusillus; R. sanguineus. Of note is the identification of an exotic species, Amblyomma sp., attached to a Portuguese emigrant arriving from USA. The top three species collected during this surveillance program were R. sanguineus (69%), followed by R. pusillus (16.4%) and H. marginatum (9.7%). However regarding antropofilic behaviour, from the 11 species found in humans the most prevalent were I. ricinus (35%), followed by R. sanguineus (34%), and H. marginatum (14%). The abundance, distribution, host association and other relevant patterns are compared with previous existing records. Regarding the tick-borne agents, all ticks collected from humans and about 10% of the questing/host-attached ticks were tested for Borrelia and Rickettsia spp., among other agents. Ten bacteria were identified so far in single or multiple infection, including Borrelia afzelii, B. garinii, B. lusitaniae, Rickettsia aeschlimannii, R. conorii, R. helvetica, R. massiliae, R. monacensis, R. raoulti, and R. slovaca. The importance of including other tick-borne agents in routine screening is also discussed. The presented data reinforces the importance of the REVIVE. The program has contributed to call attention to tick-borne diseases not only among healthcare providers but also in the populations. The workflow established, has also enabled timely screeningof ticks removed from humans, animals or in a given environment, allowing the implementation of informed prevention/control strategies and directly contributing to improve Public Health in Portugal.