Epizootic hemorrhagic disease virus (EHDV) is a vector-borne pathogen that affects both wild and domestic ruminants. Climate influences vector-borne diseases by driving vector migration to new areas, where they spread the virus. However, the lack of surveillance in some areas hinders accurate assessment the true disease burden. This study aimed to determine the seroprevalence of EHDV and associated risk factors in cattle from the northern region of Peru in 2022. Blood serum samples were collected from 578 cattle in the departments of Tumbes, Piura, Lambayeque, Cajamarca, and La Libertad and analyzed using cELISA. The overall EHDV seroprevalence was 17.82% (95% confidence interval 14.78-21.19). The highest proportion of seropositive animals was observed in two deparments closest to the equator, Piura and Tumbes (50%), followed by Lambayeque (39.1%) and Cajamarca (11.08%). In addition, the...

Bluetongue (BT) is a viral infection caused by the bluetongue virus (BTV) that affects domestic and wild ruminants worldwide. It is primarily transmitted by Culicoides spp. midges, and its infection is highly prevalent across temperate and tropical regions. However, significant changes in the global distribution of BTV have been observed in recent years. We aimed to evaluate the national BTV seroprevalence and risk factors among domestic ruminants (cattle, sheep, and goat species) in Peru. Serum samples were collected from 3452 cattle of 453 districts, 2786 sheep of 408 districts, and 1568 goats of 271 districts using a cross-sectional study in two stages (at the district and animal level) from 2017 to 2019 and analyzed by competitive enzyme-linked immunosorbent assay (cELISA). The national BTV true seroprevalences at animal level for cattle, sheep, and goats were 20.34% (95% CI: 17.76â€...