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Volume 32, Number 2—February 2026

Research

Using Routine Surveillance Data to Assess Dengue Virus Transmission Risk in Travelers Returning to the United States

Kristyna Rysava1, Zachary J. Madewell1Comments to Author , Maile B. Thayer, Liliana Sánchez-González, Kamalich Muniz-Rodriguez, Ashley Brown, Julie Thwing, Laura E. Adams, Gabriela Paz-Bailey, and Michael A. Johansson
Author affiliation: University of Warwick, Warwick, UK (K. Rysava); Centers for Disease Control and Prevention, San Juan, Puerto Rico, USA (Z.J. Madewell, M.B. Thayer, L. Sánchez-González, K. Muniz-Rodriguez, L.E. Adams, G. Paz-Bailey, M.A. Johansson); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (A. Brown, J. Thwing)

Main Article

Figure 4

Travel-associated dengue case volume and number of alert months among travelers returning to the United States, by country, 2014–2024. Stacked bars represent the number of months each country was classified as meeting both criteria (teal), exceeding the 80th percentile threshold only (yellow), or meeting the ≥10-case criterion only (light green); categories are mutually exclusive, as in Figure 3. Dots indicate the total number of travel-associated dengue cases reported from each country over the same period. The secondary y-axis reflects case counts scaled to align with the alert-month axis.

Figure 4. Travel-associated dengue case volume and number of alert months among travelers returning to the United States, by country, 2014–2024. Stacked bars represent the number of months each country was classified as meeting both criteria (teal), exceeding the 80th percentile threshold only (yellow), or meeting the ≥10-case criterion only (light green); categories are mutually exclusive, as in Figure 3. Dots indicate the total number of travel-associated dengue cases reported from each country over the same period. The secondary y-axis reflects case counts scaled to align with the alert-month axis.

Main Article

1These first authors contributed equally to this article.

Page created: January 29, 2026
Page updated: February 19, 2026
Page reviewed: February 19, 2026
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