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Dengue virus (DENV) and chikungunya virus (CHIKV) are transmitted by the same mosquito vectors and now co-circulate in many parts of the world; however, coinfections and serial infections are not often diagnosed or reported. A 38-week pregnant woman was admitted to the hospital with a diagnosis of suspected DENV and CHIKV in southern coastal Ecuador. The pregnancy was complicated by mild polyhydramnios and fetal tachycardia, and a healthy newborn was born. The patient was positive for a recent secondary DENV infection (Immunoglobulin M and Immunoglobulin G positive) and an acute CHIKV infection (real-time reverse transcriptase polymerase chain reaction positive) (Asian genotype). The newborn was not tested for either virus. This case resulted in a benign clinical course with a favorable pregnancy outcome.
Authors’ addresses: Daniel F. Farrell, Center for Global Health and Translational Science, SUNY Upstate Medical University, Syracuse, NY, E-mail: email@example.com. Christina D. Lupone, Center for Global Health and Translational Science, SUNY Upstate Medical University, Syracuse, NY, and Department of Public Health and Preventive Medicine, SUNY Upstate Medical University, Syracuse, NY, E-mail: firstname.lastname@example.org. Aileen Kenneson, Cinthya Cueva, and Naveed Heydari, Center for Global Health and Translational Science, SUNY Upstate Medical University, Syracuse, NY, E-mails: email@example.com, firstname.lastname@example.org, and email@example.com. Julio H. Barzallo Aguilera, Ministry of Health, Teofilo Davila Hospital, Machala, Ecuador, E-mail: firstname.lastname@example.org. Mark Polhemus, Department of Medicine, SUNY Upstate Medical University, Syracuse, NY, and Center for Global Health and Translational Science, SUNY Upstate Medical University, Syracuse, NY, E-mail: email@example.com. Timothy P. Endy, Department of Medicine, State University of New York, Syracuse, NY, Center for Global Health and Translational Science, SUNY Upstate Medical University, Syracuse, NY, and Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY, E-mail: firstname.lastname@example.org. Anna M. Stewart-Ibarra, Center for Global Health and Translational Science, SUNY Upstate Medical University, Syracuse, NY, Department of Medicine, SUNY Upstate Medical University, Syracuse, NY, and Public Health and Preventative Medicine, SUNY Upstate Medical University, Syracuse, NY, E-mail: email@example.com.