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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 2

Duration of dengue outbreak warnings by country of exposure for travelers returning to the United States, based on different percentile thresholds in retrospective and real-time datasets, 2010–2024. A) Retrospective (complete) ArboNET data. B) Real-time data available at each monthly timepoint. Panels show the distribution of consecutive months classified as high-risk for dengue based solely on the 75th, 80th, and 90th percentile thresholds. Horizontal lines represent the interquartile range of outbreak duration for each country; median and mean warning lengths are indicated.

Figure 2. Duration of dengue outbreak warnings by country of exposure for travelers returning to the United States, based on different percentile thresholds in retrospective and real-time datasets, 2010–2024. A) Retrospective (complete) ArboNET data. B) Real-time data available at each monthly timepoint. Panels show the distribution of consecutive months classified as high-risk for dengue based solely on the 75th, 80th, and 90th percentile thresholds. Horizontal lines represent the interquartile range of outbreak duration for each country; median and mean warning lengths are indicated.

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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