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Insect collections, VSNJV-positive insect pools, and positive premises during the VSNJV 2023 outbreak in San Diego County. (A) Abundance of individual Culicoides (pink) and Simulium (blue) collected between May and August 2023. (B) Prevalence of Culicoides (pink) and Simulium (blue) VSNJV-positive pools and number of newly confirmed or suspected VSNJV-positive premises by date, as reported by APHIS (gray line).
