Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters.

Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics a...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Elina O Erra [verfasserIn] Essi M Korhonen [verfasserIn] Liina Voutilainen [verfasserIn] Eili Huhtamo [verfasserIn] Olli Vapalahti [verfasserIn] Anu Kantele [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2013

Übergeordnetes Werk:	In: PLoS ONE - Public Library of Science (PLoS), 2007, 8(2013), 6, p e65900
Übergeordnetes Werk:	volume:8 ; year:2013 ; number:6, p e65900

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1371/journal.pone.0065900

Katalog-ID:	DOAJ020513364

Internformat


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author_variant	e o e eoe e m k emk l v lv e h eh o v ov a k ak
matchkey_str	article:19326203:2013----::egenrvlrkntcovrmann1nieeiadhiascai
hierarchy_sort_str	2013
publishDate	2013
allfields	10.1371/journal.pone.0065900 doi (DE-627)DOAJ020513364 (DE-599)DOAJc28222db9fe3475f88908206b2834272 DE-627 ger DE-627 rakwb eng Elina O Erra verfasserin aut Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters. 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics analyses suggested a longer average duration for viremia (9 days, CI95%: 8-10) and non-structural protein 1 (NS1) antigenemia (15 days, CI95%: 12-20) than reported in endemic populations. While none of the tests sufficed alone, the best diagnostic coverage was achieved by combining antibody detection with RNA or NS1 testing. Studied by regression models, early relative levels of viremia and NS1 antigenemia proved to be significantly associated with several clinical parameters: high viremia predicted greater likelihood and increased length of hospitalization, the degree of NS1 antigenemia correlated positively with hematocrit and liver transaminases, and both viremia and NS1 antigenemia levels negatively with platelet counts in follow-up. Levels of viremia and NS1 antigenemia may serve as predictors of the clinical manifestations in travel-acquired dengue. Medicine R Science Q Essi M Korhonen verfasserin aut Liina Voutilainen verfasserin aut Eili Huhtamo verfasserin aut Olli Vapalahti verfasserin aut Anu Kantele verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 8(2013), 6, p e65900 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:8 year:2013 number:6, p e65900 https://doi.org/10.1371/journal.pone.0065900 kostenfrei https://doaj.org/article/c28222db9fe3475f88908206b2834272 kostenfrei http://europepmc.org/articles/PMC3670861?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2013 6, p e65900
spelling	10.1371/journal.pone.0065900 doi (DE-627)DOAJ020513364 (DE-599)DOAJc28222db9fe3475f88908206b2834272 DE-627 ger DE-627 rakwb eng Elina O Erra verfasserin aut Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters. 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics analyses suggested a longer average duration for viremia (9 days, CI95%: 8-10) and non-structural protein 1 (NS1) antigenemia (15 days, CI95%: 12-20) than reported in endemic populations. While none of the tests sufficed alone, the best diagnostic coverage was achieved by combining antibody detection with RNA or NS1 testing. Studied by regression models, early relative levels of viremia and NS1 antigenemia proved to be significantly associated with several clinical parameters: high viremia predicted greater likelihood and increased length of hospitalization, the degree of NS1 antigenemia correlated positively with hematocrit and liver transaminases, and both viremia and NS1 antigenemia levels negatively with platelet counts in follow-up. Levels of viremia and NS1 antigenemia may serve as predictors of the clinical manifestations in travel-acquired dengue. Medicine R Science Q Essi M Korhonen verfasserin aut Liina Voutilainen verfasserin aut Eili Huhtamo verfasserin aut Olli Vapalahti verfasserin aut Anu Kantele verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 8(2013), 6, p e65900 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:8 year:2013 number:6, p e65900 https://doi.org/10.1371/journal.pone.0065900 kostenfrei https://doaj.org/article/c28222db9fe3475f88908206b2834272 kostenfrei http://europepmc.org/articles/PMC3670861?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2013 6, p e65900
allfields_unstemmed	10.1371/journal.pone.0065900 doi (DE-627)DOAJ020513364 (DE-599)DOAJc28222db9fe3475f88908206b2834272 DE-627 ger DE-627 rakwb eng Elina O Erra verfasserin aut Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters. 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics analyses suggested a longer average duration for viremia (9 days, CI95%: 8-10) and non-structural protein 1 (NS1) antigenemia (15 days, CI95%: 12-20) than reported in endemic populations. While none of the tests sufficed alone, the best diagnostic coverage was achieved by combining antibody detection with RNA or NS1 testing. Studied by regression models, early relative levels of viremia and NS1 antigenemia proved to be significantly associated with several clinical parameters: high viremia predicted greater likelihood and increased length of hospitalization, the degree of NS1 antigenemia correlated positively with hematocrit and liver transaminases, and both viremia and NS1 antigenemia levels negatively with platelet counts in follow-up. Levels of viremia and NS1 antigenemia may serve as predictors of the clinical manifestations in travel-acquired dengue. Medicine R Science Q Essi M Korhonen verfasserin aut Liina Voutilainen verfasserin aut Eili Huhtamo verfasserin aut Olli Vapalahti verfasserin aut Anu Kantele verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 8(2013), 6, p e65900 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:8 year:2013 number:6, p e65900 https://doi.org/10.1371/journal.pone.0065900 kostenfrei https://doaj.org/article/c28222db9fe3475f88908206b2834272 kostenfrei http://europepmc.org/articles/PMC3670861?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2013 6, p e65900
allfieldsGer	10.1371/journal.pone.0065900 doi (DE-627)DOAJ020513364 (DE-599)DOAJc28222db9fe3475f88908206b2834272 DE-627 ger DE-627 rakwb eng Elina O Erra verfasserin aut Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters. 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics analyses suggested a longer average duration for viremia (9 days, CI95%: 8-10) and non-structural protein 1 (NS1) antigenemia (15 days, CI95%: 12-20) than reported in endemic populations. While none of the tests sufficed alone, the best diagnostic coverage was achieved by combining antibody detection with RNA or NS1 testing. Studied by regression models, early relative levels of viremia and NS1 antigenemia proved to be significantly associated with several clinical parameters: high viremia predicted greater likelihood and increased length of hospitalization, the degree of NS1 antigenemia correlated positively with hematocrit and liver transaminases, and both viremia and NS1 antigenemia levels negatively with platelet counts in follow-up. Levels of viremia and NS1 antigenemia may serve as predictors of the clinical manifestations in travel-acquired dengue. Medicine R Science Q Essi M Korhonen verfasserin aut Liina Voutilainen verfasserin aut Eili Huhtamo verfasserin aut Olli Vapalahti verfasserin aut Anu Kantele verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 8(2013), 6, p e65900 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:8 year:2013 number:6, p e65900 https://doi.org/10.1371/journal.pone.0065900 kostenfrei https://doaj.org/article/c28222db9fe3475f88908206b2834272 kostenfrei http://europepmc.org/articles/PMC3670861?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2013 6, p e65900
allfieldsSound	10.1371/journal.pone.0065900 doi (DE-627)DOAJ020513364 (DE-599)DOAJc28222db9fe3475f88908206b2834272 DE-627 ger DE-627 rakwb eng Elina O Erra verfasserin aut Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters. 2013 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics analyses suggested a longer average duration for viremia (9 days, CI95%: 8-10) and non-structural protein 1 (NS1) antigenemia (15 days, CI95%: 12-20) than reported in endemic populations. While none of the tests sufficed alone, the best diagnostic coverage was achieved by combining antibody detection with RNA or NS1 testing. Studied by regression models, early relative levels of viremia and NS1 antigenemia proved to be significantly associated with several clinical parameters: high viremia predicted greater likelihood and increased length of hospitalization, the degree of NS1 antigenemia correlated positively with hematocrit and liver transaminases, and both viremia and NS1 antigenemia levels negatively with platelet counts in follow-up. Levels of viremia and NS1 antigenemia may serve as predictors of the clinical manifestations in travel-acquired dengue. Medicine R Science Q Essi M Korhonen verfasserin aut Liina Voutilainen verfasserin aut Eili Huhtamo verfasserin aut Olli Vapalahti verfasserin aut Anu Kantele verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 8(2013), 6, p e65900 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:8 year:2013 number:6, p e65900 https://doi.org/10.1371/journal.pone.0065900 kostenfrei https://doaj.org/article/c28222db9fe3475f88908206b2834272 kostenfrei http://europepmc.org/articles/PMC3670861?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 8 2013 6, p e65900
language	English
source	In PLoS ONE 8(2013), 6, p e65900 volume:8 year:2013 number:6, p e65900
sourceStr	In PLoS ONE 8(2013), 6, p e65900 volume:8 year:2013 number:6, p e65900
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Medicine R Science Q
isfreeaccess_bool	true
container_title	PLoS ONE
authorswithroles_txt_mv	Elina O Erra @@aut@@ Essi M Korhonen @@aut@@ Liina Voutilainen @@aut@@ Eili Huhtamo @@aut@@ Olli Vapalahti @@aut@@ Anu Kantele @@aut@@
publishDateDaySort_date	2013-01-01T00:00:00Z
hierarchy_top_id	523574592
id	DOAJ020513364
language_de	englisch
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author	Elina O Erra
spellingShingle	Elina O Erra misc Medicine misc R misc Science misc Q Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters.
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topic_title	Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters
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title	Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters.
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title_sort	dengue in travelers: kinetics of viremia and ns1 antigenemia and their associations with clinical parameters
title_auth	Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters.
abstract	Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics analyses suggested a longer average duration for viremia (9 days, CI95%: 8-10) and non-structural protein 1 (NS1) antigenemia (15 days, CI95%: 12-20) than reported in endemic populations. While none of the tests sufficed alone, the best diagnostic coverage was achieved by combining antibody detection with RNA or NS1 testing. Studied by regression models, early relative levels of viremia and NS1 antigenemia proved to be significantly associated with several clinical parameters: high viremia predicted greater likelihood and increased length of hospitalization, the degree of NS1 antigenemia correlated positively with hematocrit and liver transaminases, and both viremia and NS1 antigenemia levels negatively with platelet counts in follow-up. Levels of viremia and NS1 antigenemia may serve as predictors of the clinical manifestations in travel-acquired dengue.
abstractGer	Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics analyses suggested a longer average duration for viremia (9 days, CI95%: 8-10) and non-structural protein 1 (NS1) antigenemia (15 days, CI95%: 12-20) than reported in endemic populations. While none of the tests sufficed alone, the best diagnostic coverage was achieved by combining antibody detection with RNA or NS1 testing. Studied by regression models, early relative levels of viremia and NS1 antigenemia proved to be significantly associated with several clinical parameters: high viremia predicted greater likelihood and increased length of hospitalization, the degree of NS1 antigenemia correlated positively with hematocrit and liver transaminases, and both viremia and NS1 antigenemia levels negatively with platelet counts in follow-up. Levels of viremia and NS1 antigenemia may serve as predictors of the clinical manifestations in travel-acquired dengue.
abstract_unstemmed	Despite the increasing numbers of travel-acquired dengue, few studies have assessed virologic markers of the disease in non-endemic populations. We examined the kinetics of diagnostic markers and their associations with clinical parameters in 93 patients with travel-acquired dengue fever. Kinetics analyses suggested a longer average duration for viremia (9 days, CI95%: 8-10) and non-structural protein 1 (NS1) antigenemia (15 days, CI95%: 12-20) than reported in endemic populations. While none of the tests sufficed alone, the best diagnostic coverage was achieved by combining antibody detection with RNA or NS1 testing. Studied by regression models, early relative levels of viremia and NS1 antigenemia proved to be significantly associated with several clinical parameters: high viremia predicted greater likelihood and increased length of hospitalization, the degree of NS1 antigenemia correlated positively with hematocrit and liver transaminases, and both viremia and NS1 antigenemia levels negatively with platelet counts in follow-up. Levels of viremia and NS1 antigenemia may serve as predictors of the clinical manifestations in travel-acquired dengue.
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title_short	Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters.
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Dengue in travelers: kinetics of viremia and NS1 antigenemia and their associations with clinical parameters.

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