Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link

Volume 31, Number 6—June 2025

Research

Force of Infection Model for Estimating Time to Dengue Virus Seropositivity among Expatriate Populations, Thailand

Erica Rapheal, Amornphat Kitro, Hisham Imad, Marco Hamins-Peurtolas, Jutarmas Olanwijitwong, Lapakorn Chatapat, Taweewun Hunsawong, Kathryn Anderson1Comments to Author , and Watcharapong Piyaphanee1
Author affiliation: University of Minnesota School of Public Health, Minneapolis, Minnesota, USA (E. Rapheal); Chiang Mai University, Chiang Mai, Thailand (A. Kitro); Mahidol University, Bangkok, Thailand (H. Imad, J. Olanwijitwong, L. Chatapat, W. Piyaphanee); Osaka University, Osaka, Japan (H. Imad); University of California, San Francisco, California, USA (M. Hamins-Peurolas); US Army Medical Directorate of the Armed Force Research Institute of Medical Sciences, Bangkok (T. Hunsawong); SUNY Upstate Medical University, Syracuse, New York, USA (K. Anderson)

Main Article

Table 3

Estimates from univariate logistic models of dengue seropositivity by years in a dengue-endemic area in study of force of infection model for estimating time to dengue virus seropositivity among expatriate populations, Thailand*

Covariate in univariate models Odds ratio (95% CI)
Years unexposed 1.01 (0.9–1.02)
Average daily time outside, h 0.98 (0.92–1.03)
Male sex 1.24 (0.69–2.25)
Married to native of Southeast Asia 0.75 (0.44–1.22)
Employed 0.72 (0.45–1.48)
Urban living setting 2.04 (0.93–4.49)
Frequent use of mosquito repellent 1.11 (0.65–1.91)
Frequent use of mosquito nets 1.02 (0.61–1.71)
Frequent use of window screens 1.02 (0.63–1.65)
Frequent use of long sleeves 0.66 (0.41–1.07)
Frequent use of air conditioning 0.75 (0.46–1.24)

*Force of infection for years in dengue-endemic area (DEA) is 0.04 (95% CI 0.03–0.06). Serocatalytic models estimating dengue force of infection were fit using a binomial model with a cloglog link function with log(years in DEA) as an offset. Crude model contains only log(years in DEA) offset. Univariate models included 1 covariate and the log(years in DEA) offset.

Main Article

1These last authors contributed equally to this article.

Page created: April 16, 2025
Page updated: May 27, 2025
Page reviewed: May 27, 2025
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
file_external