https://observatorio.fm.usp.br/handle/OPI/35529
Title: | Origin of the Sao Paulo Yellow Fever epidemic of 2017-2018 revealed through molecular epidemiological analysis of fatal cases |
Authors: | CUNHA, Marielton dos Passos; DUARTE-NETO, Amaro Nunes; POUR, Shahab Zaki; ORTIZ-BAEZ, Ayda Susana; CERNY, Jiri; PEREIRA, Barbara Brito de Souza; BRACONI, Carla Torres; HO, Yeh-Li; PERONDI, Beatriz; SZTAJNBOK, Jaques; ALVES, Venancio Avancini Ferreira; DOLHNIKOFF, Marisa; HOLMES, Edward C.; SALDIVA, Paulo Hilario Nascimento; ZANOTTO, Paolo Marinho de Andrade |
Citation: | SCIENTIFIC REPORTS, v.9, article ID 20418, 10p, 2019 |
Abstract: | The largest outbreak of yellow fever of the 21st century in the Americas began in 2016, with intense circulation in the southeastern states of Brazil, particularly in sylvatic environments near densely populated areas including the metropolitan region of Sao Paulo city (MRSP) during 2017-2018. Herein, we describe the origin and molecular epidemiology of yellow fever virus (YFV) during this outbreak inferred from 36 full genome sequences taken from individuals who died following infection with zoonotic YFV. Our analysis revealed that these deaths were due to three genetic variants of sylvatic YFV that belong the South American I genotype and that were related to viruses previously isolated in 2017 from other locations in Brazil (Minas Gerais, Espirito Santo, Bahia and Rio de Janeiro states). Each variant represented an independent virus introduction into the MRSP. Phylogeographic and geopositioning analyses suggested that the virus moved around the peri-urban area without detectable human-to-human transmission, and towards the Atlantic rain forest causing human spill-over in nearby cities, yet in the absence of sustained viral transmission in the urban environment. |
Appears in Collections: | Artigos e Materiais de Revistas Científicas - FM/MPT Artigos e Materiais de Revistas Científicas - HC/ICHC Artigos e Materiais de Revistas Científicas - HC/InCor Artigos e Materiais de Revistas Científicas - LIM/05 Artigos e Materiais de Revistas Científicas - LIM/06 Artigos e Materiais de Revistas Científicas - LIM/14 Artigos e Materiais de Revistas Científicas - ODS/03 |
File | Description | Size | Format | |
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art_CUNHA_Origin_of_the_Sao_Paulo_Yellow_Fever_epidemic_2019.PDF | publishedVersion (English) | 2.66 MB | Adobe PDF | View/Open |
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