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Epidemiological Characterization of the 2024 Brazilian Dengue Epidemic: A Multi-Source Analysis Using SINAN, SIH, and InfoDengue

Year: 2026

Type: preprint

Abstract: Brazil experienced the largest dengue epidemic ever documented in any country in a single calendar year, with 10.5 million notified cases and 247,000 hospitalizations in 2024. Using publicly available national surveillance and hospital admission data, we characterize the epidemiological trajectory of this unprecedented outbreak. The effective reproduction number (Rt) peaked at 1.248 during epidemiological week 8, preceding the national case peak by approximately four weeks. Dengue virus serotype 3 (DENV-3) reemerged following a 16-year absence, exposing an estimated 50 million Brazilians born after 2008 without serotype-specific immunity. The 2024 epidemic exceeded the previous national record by 238%. These findings carry immediate implications for dengue vaccine rollout, vector control policy, and climate-adaptive public health planning.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.20332436

Author: Eduardo, Igor

Language: English

Topic: Mosquito-borne diseases and control

Subfield: Public Health, Environmental and Occupational Health

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: green

OpenAlex ID: W7162027880

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