SECTION I NANOSIZED MATERIALS IN VIROLOGY. Chapter 1. Viruses as Nanomaterials. Chapter 2. Synthesis and Characterization of Nanoparticles as Potential Viral and Antiviral Agents. Chapter 3. Biogenic Synthesis of Nanoparticulate Materials for Antiviral Applications. Chapter 4. Nanoparticle Synthesis and Administration Routes for Antiviral Uses. Chapter 5. Role of Nanostructures in Inhibition and Treatment of Viral Infections. SECTION II VIRAL NANOMATERIALS: BIOMEDICAL APPLICATIONS. Chapter 6. Photocatalytic Inactivation of Pathogenic Viruses using Metal Oxide and Carbon-Based Nanoparticles. Chapter 7. Non-Photocatalytic and Photocatalytic Inactivation of Viruses using Antiviral Assays and Antiviral Nanomaterials. Chapter 8. Application of Viral Nanomaterials in Medicine. Chapter 9. Virus-Based Nanocarriers for Targeted Drug Delivery. SECTION III ANTIVIRAL NANOTHERAPEUTICS. Chapter 10. Antiviral Nanomaterials in Therapeutic Interventions. Chapter 11. In Vivo Study of Anti-Influenza Effect of Silver Nanoparticles in a Mouse Model. Chapter 12. Antiviral Drugs as Tools for Nanomedicine. Chapter 13. Emerging Nanotechnology-Enabled Approaches to Mitigate Covid-19 Pandemic. Chapter 14. Applications of Antiviral Nanoparticles in Cancer Therapy. Chapter 15. Nano Delivery of Antiviral Plant Bioactives as Cancer Therapeutics. Chapter 16. Conjugated Graphene Gold Nanocomposites for Cancer Therapy. Chapter 17. Surface Engineered Graphene Oxide and Its Derivatives: A Prospective Nano-Structured Carbon as Anticancer Agent. Chapter 18. Antiviral Nanomaterials as Potential Targets for Malaria Prevention and Treatment.