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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 1

Serostatus of participants in study of force of infection model for estimating time to DENV seropositivity among expatriate populations, Thailand*

Serostatus No. (%) participants
Total, n = 235 DENV-negative, n = 164 DENV-positive, n = 71
Dengue
DENV-negative 164 (70)
Monotypic† 29 (12)
Multitypic‡
42 (18)


Japanese encephalitis
JEV-negative 225 160 (71.1) 65 (28.9)
JEV-positive
10
4 (40)
6 (60)
Zika
ZIKV-negative 230 161 (70) 69 (30)
ZIKV-positive 5 3 (60) 2 (40)

*DENG, dengue virus; JEV, Japanese encephalitis virus; ZIKV, Zika virus. †Person was previously infected with only 1 DENV serotype. ‡Person was previously infected with >2 different DENV serotypes.

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
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