Analysis of dengue cases according to clinical severity, São Luís, Maranhão, Brazil

Severe dengue cases have increased in Brazil since 2001, with the first records in Maranhão dating back to 2002. The aim of this study was to determine the prevalence of severe dengue cases by age group and the possible risk factors. This was a study of secondary data on dengue in residents of São L...

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Bibliographic Details
Published in:Revista do Instituto de Medicina Tropical de São Paulo 2017-11, Vol.59, p.e71-10
Main Authors: Dias, Júnior, José de Jesus, Branco, Maria Dos Remédios Freitas Carvalho, Queiroz, Rejane Christine de Sousa, Santos, Alcione Miranda Dos, Moreira, Emnielle Pinto Borges, Silva, Maria do Socorro da
Format: Article
Language:English
Subjects:
Adolescent
Age groups
Brazil - epidemiology
Children
Classification
Dengue clinical severity
Dengue complications
Dengue fever
Disease Notification
Fatalities
Female
Humans
Infections
Infectious diseases
Leukopenia
Male
Original
Prevalence
Public health
Public health surveillance
Regression analysis
Reporting requirements
Risk Factors
Severe dengue
Severe Dengue - epidemiology
Severity of Illness Index
Statistical analysis
Thrombocytopenia
TROPICAL MEDICINE
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Summary:Severe dengue cases have increased in Brazil since 2001, with the first records in Maranhão dating back to 2002. The aim of this study was to determine the prevalence of severe dengue cases by age group and the possible risk factors. This was a study of secondary data on dengue in residents of São Luís, Maranhão, Brazil, using probable cases notified to the National Mandatory Reporting System (SINAN) from 2002 to 2011. The diagnosis and classification of dengue were based on the Brazilian Ministry of Health criteria: dengue fever (DF), dengue hemorrhagic fever (DHF) and dengue fever with complications (DWC). DHF and DWC were considered severe dengue, and DF was classified as non-severe dengue. A logistic regression analysis was performed with severe dengue as the outcome. During the study period, 1,229 cases of severe dengue were reported; of these, 812 in patients under the age of 15 (66%). Among the risk factors evaluated, age under 15 years old (OR = 3.10, 95% CI = 2.69-3.57, p-value = 0.001) was associated with severe dengue. The prevalence of severe dengue in children under the age of 15 was higher, and only this age group was associated with the occurrence of severe dengue.
ISSN:0036-4665
1678-9946
1678-9946
0036-4665
DOI:10.1590/S1678-9946201759071