Tiago Gräf
@GrafTiago
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Researcher at Oswaldo Cruz Foundation | RNA viruses | Phylogenetics, Molecular Evolution & Epidemiology
Curitiba, Brasil
Joined December 2016
The sign of intelligence is that you are constantly wondering. Idiots are always dead sure about every damn thing they are doing in their life.
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'Nunca quisemos ser milionários'❤️🏥 A farmacêutica brasileira Ana Helena Ulbrich aparece em lista da revista Time ao lado de líderes como Elon Musk e Sam Altman: https://t.co/hW986rLNie
#MaisLidas
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O fato de certos sistemas se basearem primariamente no tamanho da lista de publicações de um cientista, sem necessariamente levar em conta o que tem lá ou qual a contribuição efetiva do autor, abre margem para figuras assumirem posição de liderança criando pirâmides de artigos.
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Tracing the evolutionary history of the CCR5delta32 deletion via ancient and modern genomes @CellCellPress 🤩🤩🤩
cell.com
The CCR5delta32 deletion arose on a pre-existing haplotype of 84 variants over 6,700 years ago in the Western Steppe. Positive selection drove it to high frequency, resulting in a variant of presen...
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Orientador não é um chefe, tal como alguns imaginam. Orientador deveria ser um grande aliado acadêmico dos seus alunos. Alguém que abre portas e ajuda a direcionar a pesquisa com sua experiência e visão.
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Diagnóstico de caso de Dengue sorotipo DENV3 em Porto Alegre, Rio Grande do Sul - não é incomum no retorno das férias vermos a ocorrência de casos importados de arboviroses. Época de cuidados redobrados: repelente, eliminar criatórios, uso de inseticida https://t.co/tSIveeiXyn
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Todo ano os extremistas dizem a mesma coisa: "Vocês vão acabar". E todo ano acontece o mesmo: o movimento cresce ainda mais. Obrigado a todos os gigantes por nos acompanharem nessa linda trajetória. Estamos só no começo! ✊🏽
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Just out! Our recent work showing the factors leading dengue expansion to a non-endemic temperate region. @GabrielWallau @GrafTiago @fnaveca @marcelohspaiva
https://t.co/T1dCH2MuqU
medrxiv.org
Dengue fever, caused by the dengue virus (DENV), is the most important mosquito-borne disease impacting human health globally, it is particularly prevalent in tropical regions where Aedes vectors...
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Suspender fondos a #PEPFAR afecta gravemente la respuesta global al VIH - Sida 🛑⚠️
The immediate halting of funding to #PEPFAR places millions of lives in jeopardy. The IAS urgently calls on policy makers and stakeholders to restore the funding lifeline to this pivotal programme. Lives depend on it, right now. Read our full statement:
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Fazendo as malas também... Like ‘old Twitter’: The scientific community finds a new home on Bluesky | Science | AAAS
science.org
After recent changes to Elon Musk’s X, a gradual migration turns into a stampede
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Atualizações sobre Gripe aviária H5N1: um adolescente, no Canadá (British Columbia), está hospitalizado e com infecção confirmada por H5N1, o qual apresenta mutações que trazem preocupações sobre seu potencial de infectar humanos Vamos detalhar essa história 🔻🧵
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This study would not be possible without the collaboration of several partners of states' surveillance services and https://t.co/QzGrpSDz7T
@fnaveca @edsondelatorre @GabrielWallau Gonzalo Bello and others
genomahcov.fiocruz.br
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In the revised version of the study, we performed new analyses to formally test the impact that different agricultural crops had on the spread of the virus in Brazil in 2024. The planted area with bananas showed the strongest correlation among all the crops tested
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Our latest study about the expansion of Oropouche virus through non-endemic regions in Brazil is now published on @TheLancetInfDis
https://t.co/LI3xJCVeeI In the thread below I summarized the main findings presented in the preprint
Our new study on the Oropouche virus (OROV) epidemic in Brazil is now available in preprint form. We analyzed the characteristics of the main affected locations and confirmed that cases outside the Amazon region are caused by the new reassortant variant. https://t.co/uK8JuEKBxi
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Floods affected 2 million people in southern Brazil. I visited the area months later to see how people were coping and what scientists were learning about the mental health burden of a climate disaster. The story was supported by @pulitzercenter @Nature
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Sobre carros elétricos, há duas discussões paralelas: 1) Se ele é economicamente vantajoso e "prático" no Brasil. 2) Se ele é mais sustentável que um carro a combustão. A resposta pro 1 é "depende" e 2 é "sim". Mas, mais importante, à medida que o tempo passar, a questão 1 vai
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I'm very happy to announce that our study about the emergence of the new reassortant lineage of Oropouche virus is now published on https://t.co/4tS26aQjop with @fnaveca @edsondelatorre @GabrielWallau @ighorarantes A summary of our findings can be found in the thread below:
nature.com
Nature Medicine - Genomic and epidemiologic analyses revealed that a novel reassortant viral lineage of the Oropouche virus, which has been circulating in the western Amazon region of Brazil for...
We recently have published a new preprint about the current epidemic of Oropouche virus (OROV) in the Amazon region in Brazil. In this work we show that the epidemic is caused by a new reassortant lineage which have emerged around a decade ago. Here is a short thread about this:
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Some young scientists that also helped in this study @CarolNFerreira @agata_rossi6 @ighorarantes @dezordi_fz
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This study would not be possible without the collaboration of several partners of states' surveillance services and https://t.co/QzGrpSDz7T such as @fnaveca, @edsondelatorre, @GabrielWallau, Gonzalo Bello and others
genomahcov.fiocruz.br
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