Unrecognized Emergence of Chikungunya Virus during a Zika Virus Outbreak in Salvador, Brazil.
BACKGROUND:Chikungunya virus (CHIKV) entered Brazil in 2014, causing a large outbreak in Feira de Santana, state of Bahia. Although cases have been recorded in Salvador, the capital of Bahia, located ~100 km of Feira de Santana, CHIKV transmission has not been perceived to occur epidemically, largel...
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doaj-bb49029f03d34adab88f0575d0249bb82020-11-25T01:21:27ZengPublic Library of Science (PLoS)PLoS Neglected Tropical Diseases1935-27271935-27352017-01-01111e000533410.1371/journal.pntd.0005334Unrecognized Emergence of Chikungunya Virus during a Zika Virus Outbreak in Salvador, Brazil.Cristiane W CardosoMariana KikutiAna Paula P B PratesIgor A D PaploskiLaura B TauroMonaise M O SilvaPerla SantanaMarta F S RegoMitermayer G ReisUriel KitronGuilherme S RibeiroBACKGROUND:Chikungunya virus (CHIKV) entered Brazil in 2014, causing a large outbreak in Feira de Santana, state of Bahia. Although cases have been recorded in Salvador, the capital of Bahia, located ~100 km of Feira de Santana, CHIKV transmission has not been perceived to occur epidemically, largely contrasting with the Zika virus (ZIKV) outbreak and ensuing complications reaching the city in 2015. METHODOLOGY/PRINCIPAL FINDINGS:This study aimed to determine the intensity of CHIKV transmission in Salvador between November 2014 and April 2016. Results of all the CHIKV laboratory tests performed in the public sector were obtained and the frequency of positivity was analyzed by epidemiological week. Of the 2,736 tests analyzed, 456 (16.7%) were positive. An increasing in the positivity rate was observed, starting in January/2015, and peaking at 68% in August, shortly after the exanthematous illness outbreak attributed to ZIKV. CONCLUSIONS/SIGNIFICANCE:Public health authorities and health professionals did not immediately detect the increase in CHIKV cases, likely because all the attention was directed to the ZIKV outbreak and ensuing complications. It is important that regions in the world that harbor arbovirus vectors and did not experience intense ZIKV and CHIKV transmission be prepared for the potential co-emergence of these two viruses.http://europepmc.org/articles/PMC5289630?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cristiane W Cardoso Mariana Kikuti Ana Paula P B Prates Igor A D Paploski Laura B Tauro Monaise M O Silva Perla Santana Marta F S Rego Mitermayer G Reis Uriel Kitron Guilherme S Ribeiro |
spellingShingle |
Cristiane W Cardoso Mariana Kikuti Ana Paula P B Prates Igor A D Paploski Laura B Tauro Monaise M O Silva Perla Santana Marta F S Rego Mitermayer G Reis Uriel Kitron Guilherme S Ribeiro Unrecognized Emergence of Chikungunya Virus during a Zika Virus Outbreak in Salvador, Brazil. PLoS Neglected Tropical Diseases |
author_facet |
Cristiane W Cardoso Mariana Kikuti Ana Paula P B Prates Igor A D Paploski Laura B Tauro Monaise M O Silva Perla Santana Marta F S Rego Mitermayer G Reis Uriel Kitron Guilherme S Ribeiro |
author_sort |
Cristiane W Cardoso |
title |
Unrecognized Emergence of Chikungunya Virus during a Zika Virus Outbreak in Salvador, Brazil. |
title_short |
Unrecognized Emergence of Chikungunya Virus during a Zika Virus Outbreak in Salvador, Brazil. |
title_full |
Unrecognized Emergence of Chikungunya Virus during a Zika Virus Outbreak in Salvador, Brazil. |
title_fullStr |
Unrecognized Emergence of Chikungunya Virus during a Zika Virus Outbreak in Salvador, Brazil. |
title_full_unstemmed |
Unrecognized Emergence of Chikungunya Virus during a Zika Virus Outbreak in Salvador, Brazil. |
title_sort |
unrecognized emergence of chikungunya virus during a zika virus outbreak in salvador, brazil. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS Neglected Tropical Diseases |
issn |
1935-2727 1935-2735 |
publishDate |
2017-01-01 |
description |
BACKGROUND:Chikungunya virus (CHIKV) entered Brazil in 2014, causing a large outbreak in Feira de Santana, state of Bahia. Although cases have been recorded in Salvador, the capital of Bahia, located ~100 km of Feira de Santana, CHIKV transmission has not been perceived to occur epidemically, largely contrasting with the Zika virus (ZIKV) outbreak and ensuing complications reaching the city in 2015. METHODOLOGY/PRINCIPAL FINDINGS:This study aimed to determine the intensity of CHIKV transmission in Salvador between November 2014 and April 2016. Results of all the CHIKV laboratory tests performed in the public sector were obtained and the frequency of positivity was analyzed by epidemiological week. Of the 2,736 tests analyzed, 456 (16.7%) were positive. An increasing in the positivity rate was observed, starting in January/2015, and peaking at 68% in August, shortly after the exanthematous illness outbreak attributed to ZIKV. CONCLUSIONS/SIGNIFICANCE:Public health authorities and health professionals did not immediately detect the increase in CHIKV cases, likely because all the attention was directed to the ZIKV outbreak and ensuing complications. It is important that regions in the world that harbor arbovirus vectors and did not experience intense ZIKV and CHIKV transmission be prepared for the potential co-emergence of these two viruses. |
url |
http://europepmc.org/articles/PMC5289630?pdf=render |
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