Viral infections refer to the entry and multiplication of harmful viruses in the body of a host thereby causing various damages. Such infections are a major cause of morbidity and mortality. Prevention and treatment of these infections are a challenging task. The current COVID-19 pandemic has made us more concern about the management of such viral infections than before. Medical Nutrition Therapy (MNT) plays a vital role in the treatment of these infections. Macronutrients and micronutrients present in a diet are crucial for the optimal immune response of the host. Each and every viral infection has its own specific set of characteristics which contribute to the complexity of dietary management of these conditions. The current article targets to highlight the overall nutrition care process in viral infections with special reference to COVID-19. An evidence based dietary approach will be helpful for getting optimal outcomes in patients suffering from such infections.