William Lemayian is a distinguished research scientist at the Kenya Agricultural and Livestock Research Organization's Veterinary Science Research Institute (KALRO-VSRI). He holds a Bachelor of Science in Biochemistry and a Master of Science in Pharmacology and Toxicology, both from the University of Nairobi. With four years of dedicated research experience, William's work centres on advancing disease diagnostics, addressing infectious diseases, zoonotic pathogens, antimicrobial resistance (AMR), vaccinology, and championing the One Health approach. His profound expertise in pharmacology and toxicology fuels his exploration of novel therapeutic agents, unravelling drug mechanisms, and ensuring the safety and efficacy of vaccines and antimicrobials, especially in veterinary medicine and zoonotic diseases.