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Schematic map for the source of Zike virus (ZIKV) and dengue virus (DENV)-1–4 strains used in the studies. ZIKV only, DENV only, and ZIKV–DENV coinfections are shown in red, blue, and purple, respectively. Countries with isolated ZIKV and DENV strains from different hosts (human, mosquitos, and monkeys) are illustrated. The letters in parentheses indicate the year of ZIKV or DENV isolation.
