. Introduction
2. Viral Structure and Classification
3. Features of Host Cells: Molecular and Cellular Biology Review
4. Virus Replication
5. Virus Transmission, Entry, and Spread
6. The Immune Response to Viruses
7. Virology Research and Diagnosis of Viral Infections
8. Vaccines, Anti-Virals, and the Beneficial Uses of Viruses
9. Viruses and Cancer
10. Influenza
11. Human Immunodeficiency Virus (HIV)
12. Hepatitis Viruses
13. Herpesviruses
14. Coronaviruses
15. Poliovirus
16. Poxviruses
17. Emerging and dangerous viruses
18. Notable Non-Human Viruses and Nonliving Infectious Agents
Appendices
1. Abbreviations
2. Glossary