A survey of flaviviruses in birds in green areas of São Paulo, Brazil

Orico, Lilian Dias; Fernandes, Lícia Natal; Melo, Marcos Antônio; Zwarg, Ticiana; Levi, José Eduardo; Marrelli, Mauro Toledo

doi:10.1590/0037-8682-0426-2015

Cited by 2 publications

(4 citation statements)

References 11 publications

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“…In Brazil, an investigation for WNV conducted between 2008 and 2010, 18 Rufous-bellied thrush tested negative for WNV by molecular and serological methods [ 6 ]. Between 2012 and 2013, free-ranging birds, including 13 individuals of Rufous-bellied thrush captured from green areas of the city of São Paulo, southeastern Brazil, tested negative for flaviviruses by real-time RT-PCR [ 51 ].…”

Section: Discussionmentioning

confidence: 99%

“…The potential participation of this species in flavivirus enzootic cycles of transmission in Brazil has already been investigated. Between 2012 and 2013, 29 free-ranging Sayaca tanager individuals collected in the city of São Paulo, southeastern Brazil, tested negative by real-time RT-PCR for flaviviruses [ 51 ]. As part of an investigation for WNV in northeast Brazil, four Sayaca tanager individuals were tested, but no evidence of WNV infection was reported [ 6 ].…”

Section: Discussionmentioning

confidence: 99%

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West Nile Virus in the State of Ceará, Northeast Brazil

Chalhoub

Queiroz-Junior²,

Duarte³

et al. 2021

Microorganisms

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In June 2019, a horse with neurological disorder was diagnosed with West Nile virus (WNV) in Boa Viagem, a municipality in the state of Ceará, northeast Brazil. A multi-institutional task force coordinated by the Brazilian Ministry of Health was deployed to the area for case investigation. A total of 513 biological samples from 78 humans, 157 domestic animals and 278 free-ranging wild birds, as well as 853 adult mosquitoes of 22 species were tested for WNV by highly specific serological and/or molecular tests. No active circulation of WNV was detected in vertebrates or mosquitoes by molecular methods. Previous exposure to WNV was confirmed by seroconversion in domestic birds and by the detection of specific neutralizing antibodies in 44% (11/25) of equids, 20.9% (14/67) of domestic birds, 4.7% (13/278) of free-ranging wild birds, 2.6% (2/78) of humans, and 1.5% (1/65) of small ruminants. Results indicate that not only equines but also humans and different species of domestic animals and wild birds were locally exposed to WNV. The detection of neutralizing antibodies for WNV in free-ranging individuals of abundant passerine species suggests that birds commonly found in the region may have been involved as amplifying hosts in local transmission cycles of WNV.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

West Nile Virus in the State of Ceará, Northeast Brazil

Chalhoub

Queiroz-Junior²,

Duarte³

et al. 2021

Microorganisms

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“…Mosquitoes were collected in immature and adult phases using various methods and then identified and separated for flavivirus analyses and investigation of blood meal sources of mosquitoes. The possible presence of arbovirus, mainly Flavivirus, in the collected mosquitoes was investigated and at the same time investigated the possible virological infections of birds that frequent or nest in the parks of São Paulo (Natal-Fernandes et al 2016, Orico et al 2016). The study failed to find any flaviviruses of medical importance in the municipal parks of São Paulo, however, nucleotide sequences of Culex flavivirus (CxFV) and Aedes flavivirus (AeFV) were detected in the mosquitoes (Natal-Fernandes et al 2016).…”

Section: Mosquito Diversity In the City Of São Paulomentioning

confidence: 99%

“…It is strongly recommended that surveillance of flaviviruses in these locations be undertaken because of the risk of circulation of pathogenicviruses of this genus. In addition, the investigation of virological infections of birds were negative for the presence of viral ribonucleic acid (RNA) (Orico et al 2016). Despite the negative results, Flavivirus surveillance must be performed regularly due to favorable ecological conditions for virus circulation and transmission among birds in these areas and their close proximity to humans.…”

Section: Mosquito Diversity In the City Of São Paulomentioning

confidence: 99%

Biodiversity and public health interface

2022

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Alongside modernity, the human activity has been a key factor in global environmental risks, with worldwide anthropic modification being the cause of the emergence of diseases for wild and livestock animals, and even humans. In special, the increase in the spatial distribution and in the incidence of some emerging infectious diseases (EID) are directly associated to deforestation and global climate changes. Moreover, the arise of new EID agents, such as the SARS-COV-2 have been reported for the last 30 years. On the other hand, biodiversity has been shown to be a key indicator for ecosystem health, and to pose a role to increase the promotion of human public health. In neotropical regions, and in special, in Brazil, several infectious diseases have been demonstrated to be directly affected for the biodiversity loss, such as malaria, hantavirus pulmonary syndrome, yellow fever, urban arboviruses, spotted fever, amongst other. To better understand the ecosystem capacity of regulation of infectious diseases, FAPESP BIOTA program have supported researchers and research projects to increase knowledge about Brazilian biodiversity and the ecosystems, such as diversity of bird bioagents, venomous animals biodiversity, diversity of mosquitos species in forest patches inside urban areas, propagation of the yellow fever virus over fragmented forest territories, loss of ecological corridors and occurrence of spotted fever and malaria, amongst others. It is noteworthy that FAPESP BIOTA is a successful program and must be expanded as an important tool for present and future public health promotion.

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A survey of flaviviruses in birds in green areas of São Paulo, Brazil

Abstract: Despite the negative results, Flavivirus surveillance must be performed regularly due to favorable ecological conditions for virus circulation and transmission among birds in these areas and their close proximity to humans.

Cited by 2 publications

References 11 publications

West Nile Virus in the State of Ceará, Northeast Brazil

West Nile Virus in the State of Ceará, Northeast Brazil

Biodiversity and public health interface

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