Hyalomma dromedarii ( H. dromedarii ) is a major ectoparasite of camels in arid regions such as Egypt, where it causes significant economic losses and transmits several zoonotic pathogens. This study evaluated the acaricidal efficacy of a novel, locally prepared Astragalus polysaccharides nanoemulsified formulation (APS-NE) against various developmental stages of H. dromedarii infesting camels. APS-NE was prepared using ultras...