Teerawut Nedumpun

1. Introduction Duck Tembusu virus (DTMUV) is an emerging avian pathogenic flavivirus that causes severe neurological disorders and acute egg drop syndrome in ducks and other avian species, including geese and chickens [1, 2]. Several studies have consistently shown that DTMUV primarily induces growth retardation and severe neurological signs in young ducks, and a marked reduction in egg production in laying ducks [3, 4].

Duck Tembusu virus (DTMUV), an emerging avian pathogenic flavivirus, causes severe neurological disorders and acute egg drop syndrome in ducks. Currently, several clusters of DTMUV, including clusters 1, 2, and 3, have been identified and caused outbreaks in Asia. However, most of the DTMUV pathogenesis evaluation has mainly focused on cluster 2, while limited information is available on the pathogenesis of other DTMUV clusters, particularly cluster 1.

ORIGINAL ARTICLE Aunyaratana Thontiravong, Aunyaratana Thontiravong orcid.org/0000-0003-2120-120X Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, 10330 Thailand Center of Excellence for Emerging and Re-emerging Infectious Diseases in Animals (CUEIDAs), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand Animal Vector-Borne Disease Research Unit, Veterinary Parasitology Unit, Department of Veterinary Pathology,...