Underrecognition of Dengue during 2013 Epidemic in Luanda, Angola

During the 2013 dengue epidemic in Luanda, Angola, 811 dengue rapid diagnostic test–positive cases were reported to the Ministry of Health. To better understand the magnitude of the epidemic and identify risk factors for dengue virus (DENV) infection, we conducted cluster surveys around households o...

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Main Authors: Tyler M. Sharp, Rosa Moreira, Maria José Soares, Lúis Miguel da Costa, Jennifer Mann, Mark J. Delorey, Elizabeth Hunsperger, Jorge L. Muñoz-Jordán, Candimar Colón, Harold S. Margolis, Adelaide de Caravalho, Kay M. Tomashek
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2015-08-01
Series:Emerging Infectious Diseases
Subjects:
Online Access:https://wwwnc.cdc.gov/eid/article/21/8/15-0368_article
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author Tyler M. Sharp
Rosa Moreira
Maria José Soares
Lúis Miguel da Costa
Jennifer Mann
Mark J. Delorey
Elizabeth Hunsperger
Jorge L. Muñoz-Jordán
Candimar Colón
Harold S. Margolis
Adelaide de Caravalho
Kay M. Tomashek
author_facet Tyler M. Sharp
Rosa Moreira
Maria José Soares
Lúis Miguel da Costa
Jennifer Mann
Mark J. Delorey
Elizabeth Hunsperger
Jorge L. Muñoz-Jordán
Candimar Colón
Harold S. Margolis
Adelaide de Caravalho
Kay M. Tomashek
author_sort Tyler M. Sharp
collection DOAJ
description During the 2013 dengue epidemic in Luanda, Angola, 811 dengue rapid diagnostic test–positive cases were reported to the Ministry of Health. To better understand the magnitude of the epidemic and identify risk factors for dengue virus (DENV) infection, we conducted cluster surveys around households of case-patients and randomly selected households 6 weeks after the peak of the epidemic. Of 173 case cluster participants, 16 (9%) exhibited evidence of recent DENV infection. Of 247 random cluster participants, 25 (10%) had evidence of recent DENV infection. Of 13 recently infected participants who had a recent febrile illness, 7 (54%) had sought medical care, and 1 (14%) was hospitalized with symptoms consistent with severe dengue; however, none received a diagnosis of dengue. Behavior associated with protection from DENV infection included recent use of mosquito repellent or a bed net. These findings suggest that the 2013 dengue epidemic was larger than indicated by passive surveillance data.
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spelling doaj.art-002de45a5c8445af8031506d4e8a12302022-12-21T18:52:41ZengCenters for Disease Control and PreventionEmerging Infectious Diseases1080-60401080-60592015-08-012181311131610.3201/eid2108.150368Underrecognition of Dengue during 2013 Epidemic in Luanda, AngolaTyler M. SharpRosa MoreiraMaria José SoaresLúis Miguel da CostaJennifer MannMark J. DeloreyElizabeth HunspergerJorge L. Muñoz-JordánCandimar ColónHarold S. MargolisAdelaide de CaravalhoKay M. TomashekDuring the 2013 dengue epidemic in Luanda, Angola, 811 dengue rapid diagnostic test–positive cases were reported to the Ministry of Health. To better understand the magnitude of the epidemic and identify risk factors for dengue virus (DENV) infection, we conducted cluster surveys around households of case-patients and randomly selected households 6 weeks after the peak of the epidemic. Of 173 case cluster participants, 16 (9%) exhibited evidence of recent DENV infection. Of 247 random cluster participants, 25 (10%) had evidence of recent DENV infection. Of 13 recently infected participants who had a recent febrile illness, 7 (54%) had sought medical care, and 1 (14%) was hospitalized with symptoms consistent with severe dengue; however, none received a diagnosis of dengue. Behavior associated with protection from DENV infection included recent use of mosquito repellent or a bed net. These findings suggest that the 2013 dengue epidemic was larger than indicated by passive surveillance data.https://wwwnc.cdc.gov/eid/article/21/8/15-0368_articleDengueAngolaepidemicclustersurveillance
spellingShingle Tyler M. Sharp
Rosa Moreira
Maria José Soares
Lúis Miguel da Costa
Jennifer Mann
Mark J. Delorey
Elizabeth Hunsperger
Jorge L. Muñoz-Jordán
Candimar Colón
Harold S. Margolis
Adelaide de Caravalho
Kay M. Tomashek
Underrecognition of Dengue during 2013 Epidemic in Luanda, Angola
Emerging Infectious Diseases
Dengue
Angola
epidemic
cluster
surveillance
title Underrecognition of Dengue during 2013 Epidemic in Luanda, Angola
title_full Underrecognition of Dengue during 2013 Epidemic in Luanda, Angola
title_fullStr Underrecognition of Dengue during 2013 Epidemic in Luanda, Angola
title_full_unstemmed Underrecognition of Dengue during 2013 Epidemic in Luanda, Angola
title_short Underrecognition of Dengue during 2013 Epidemic in Luanda, Angola
title_sort underrecognition of dengue during 2013 epidemic in luanda angola
topic Dengue
Angola
epidemic
cluster
surveillance
url https://wwwnc.cdc.gov/eid/article/21/8/15-0368_article
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