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Identification of Co-Circulating Dengue and South America-Origin Zika Viruses, Pakistan, 2021-2022
Emerging Infectious Diseases
|July 24, 2025
Abstract:
We collected samples from febrile patients in Karachi, Pakistan, in 2021-2022. Sequencing, molecular, and serologic screens revealed dengue serotype 2 and Zika virus. The Zika lineage was inferred to be from Brazil in 2016, indicating unobserved circulation. We conclude that Zika virus contributes to perceived dengue outbreak burden in Pakistan.

