Selective protease inhibitors from secondary metabolites of Philippine medicinal plants against porcine epidemic diarrhea virus: A computational veterinary drug discovery approach.

Porcine epidemic diarrhea virus (PEDV) is a recurring coronavirus that causes severe diarrhea in pigs with high mortality and morbidity rates, especially in neonatal pigs. Despite the availability of vaccines, their efficacy is limited owing to antigenic differences between the vaccine and field strains, which poses a challenge to infection control. Antiviral drugs targeting conserved PEDV proteins show promise for complementing vaccination strategies. PEDV Nsp3 (PL2Pro) and Nsp5 (3CLPro) are essential proteases vital for viral replication, making them attractive targets for drug development against PEDV.