ArticleJournal of tropical medicine2026
Factors Associated With Severe Dengue During the 2019 Outbreak in Southern Colombia: Implications for Hyperendemic Regions.
Article in Journal of tropical medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: In 2019, Colombia reported over 127,000 dengue virus (DENV) infections, with Huila accounting for 20% of the national total of severe dengue (SD) cases. This highlights the need to identify the local determinants of severity. Methods: We examined 5494 dengue and 251 SD cases with laboratory confirmation reported in Huila, southern Colombia, in 2019. Multiplex RT-qPCR was performed on 571 samples to determine viral serotypes. Multivariate logistic regression adjusted for age, sex, and comorbidities assessed epidemiological, clinical, and virological factors associated with SD. Results: SD manifested as vascular leakage with or without shock (76%), organ involvement (13%), severe bleeding (2.7%), and multiple severe manifestations in 8.3%. A trend toward higher frequency of severity among vulnerable patients in the subsidized health insurance system was observed. DENV-1 was the most prevalent serotype, but DENV-2 was associated with severity. Age < 5 years (OR = 4; 95% CI: 2.3-6.8), 5-15 years (OR = 1.9; 95% CI: 1.1-3.1), diarrhea (OR = 2.1; 95% CI: 1.5-2.9), vomiting (OR = 1.8; 95% CI: 1.2-2.2), abdominal pain (OR = 3.2; 95% CI: 2.3-4.6), hepatomegaly (OR = 4.7; 95% CI: 3.4-6.7), platelet count < 100,000/μL (OR = 7.2; 95% CI: 5.2-10.1), and fluid accumulation (OR = 10.3; 95% CI: 6-17.8), were the main factors associated with SD. Conclusion: Young age, gastrointestinal manifestations, hepatomegaly, thrombocytopenia, fluid accumulation, and DENV-2 infection were associated with SD during the 2019 epidemic in southern Colombia.
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