Epidemiology of Chikungunya Virus in Bahia, Brazil, 2014-2015
Chikungunya is an emerging arbovirus that is characterized into four lineages. One of these, the Asian genotype, has spread rapidly in the Americas after its introduction in the Saint Martin island in October 2013. Unexpectedly, a new lineage, the East-Central-South African genotype, was introduced...
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ftpubmed:oai:pubmedcentral.nih.gov:4747681 2023-05-15T17:10:28+02:00 Epidemiology of Chikungunya Virus in Bahia, Brazil, 2014-2015 Rodrigues Faria, Nuno Lourenço, José Marques de Cerqueira, Erenilde Maia de Lima, Maricélia Pybus, Oliver Carlos Junior Alcantara, Luiz 2016-02-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4747681/ http://www.ncbi.nlm.nih.gov/pubmed/27330849 https://doi.org/10.1371/currents.outbreaks.c97507e3e48efb946401755d468c28b2 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4747681/ http://www.ncbi.nlm.nih.gov/pubmed/27330849 http://dx.doi.org/10.1371/currents.outbreaks.c97507e3e48efb946401755d468c28b2 © 2016 Rodrigues Faria, Lourenço, Marques de Cerqueira, Maia de Lima, Pybus, Carlos Junior Alcantara, et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. CC-BY Discussion Text 2016 ftpubmed https://doi.org/10.1371/currents.outbreaks.c97507e3e48efb946401755d468c28b2 2016-06-26T00:45:05Z Chikungunya is an emerging arbovirus that is characterized into four lineages. One of these, the Asian genotype, has spread rapidly in the Americas after its introduction in the Saint Martin island in October 2013. Unexpectedly, a new lineage, the East-Central-South African genotype, was introduced from Angola in the end of May 2014 in Feira de Santana (FSA), the second largest city in Bahia state, Brazil, where over 5,500 cases have now been reported. Number weekly cases of clinically confirmed CHIKV in FSA were analysed alongside with urban district of residence of CHIKV cases reported between June 2014 and October collected from the municipality’s surveillance network. The number of cases per week from June 2014 until September 2015 reveals two distinct transmission waves. The first wave ignited in June and transmission ceased by December 2014. However, a second transmission wave started in January and peaked in May 2015, 8 months after the first wave peak, and this time in phase with Dengue virus and Zika virus transmission, which ceased when minimum temperature dropped to approximately 15°C. We find that shorter travelling times from the district where the outbreak first emerged to other urban districts of FSA were strongly associated with incidence in each district in 2014 (R2). Text Martin Island PubMed Central (PMC) Martin Island ENVELOPE(56.967,56.967,-66.733,-66.733) Wave Peak ENVELOPE(-45.605,-45.605,-60.610,-60.610) PLoS Currents |
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Discussion Rodrigues Faria, Nuno Lourenço, José Marques de Cerqueira, Erenilde Maia de Lima, Maricélia Pybus, Oliver Carlos Junior Alcantara, Luiz Epidemiology of Chikungunya Virus in Bahia, Brazil, 2014-2015 |
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Discussion |
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Chikungunya is an emerging arbovirus that is characterized into four lineages. One of these, the Asian genotype, has spread rapidly in the Americas after its introduction in the Saint Martin island in October 2013. Unexpectedly, a new lineage, the East-Central-South African genotype, was introduced from Angola in the end of May 2014 in Feira de Santana (FSA), the second largest city in Bahia state, Brazil, where over 5,500 cases have now been reported. Number weekly cases of clinically confirmed CHIKV in FSA were analysed alongside with urban district of residence of CHIKV cases reported between June 2014 and October collected from the municipality’s surveillance network. The number of cases per week from June 2014 until September 2015 reveals two distinct transmission waves. The first wave ignited in June and transmission ceased by December 2014. However, a second transmission wave started in January and peaked in May 2015, 8 months after the first wave peak, and this time in phase with Dengue virus and Zika virus transmission, which ceased when minimum temperature dropped to approximately 15°C. We find that shorter travelling times from the district where the outbreak first emerged to other urban districts of FSA were strongly associated with incidence in each district in 2014 (R2). |
format |
Text |
author |
Rodrigues Faria, Nuno Lourenço, José Marques de Cerqueira, Erenilde Maia de Lima, Maricélia Pybus, Oliver Carlos Junior Alcantara, Luiz |
author_facet |
Rodrigues Faria, Nuno Lourenço, José Marques de Cerqueira, Erenilde Maia de Lima, Maricélia Pybus, Oliver Carlos Junior Alcantara, Luiz |
author_sort |
Rodrigues Faria, Nuno |
title |
Epidemiology of Chikungunya Virus in Bahia, Brazil, 2014-2015 |
title_short |
Epidemiology of Chikungunya Virus in Bahia, Brazil, 2014-2015 |
title_full |
Epidemiology of Chikungunya Virus in Bahia, Brazil, 2014-2015 |
title_fullStr |
Epidemiology of Chikungunya Virus in Bahia, Brazil, 2014-2015 |
title_full_unstemmed |
Epidemiology of Chikungunya Virus in Bahia, Brazil, 2014-2015 |
title_sort |
epidemiology of chikungunya virus in bahia, brazil, 2014-2015 |
publisher |
Public Library of Science |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4747681/ http://www.ncbi.nlm.nih.gov/pubmed/27330849 https://doi.org/10.1371/currents.outbreaks.c97507e3e48efb946401755d468c28b2 |
long_lat |
ENVELOPE(56.967,56.967,-66.733,-66.733) ENVELOPE(-45.605,-45.605,-60.610,-60.610) |
geographic |
Martin Island Wave Peak |
geographic_facet |
Martin Island Wave Peak |
genre |
Martin Island |
genre_facet |
Martin Island |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4747681/ http://www.ncbi.nlm.nih.gov/pubmed/27330849 http://dx.doi.org/10.1371/currents.outbreaks.c97507e3e48efb946401755d468c28b2 |
op_rights |
© 2016 Rodrigues Faria, Lourenço, Marques de Cerqueira, Maia de Lima, Pybus, Carlos Junior Alcantara, et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/currents.outbreaks.c97507e3e48efb946401755d468c28b2 |
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