Virology is the study of viruses, their structure, classification, replication, and interaction with host organisms. As a course, it explores the molecular and cellular biology of viruses, focusing on their genetic material, protein composition, and mechanisms of infection. It delves into the life cycle of viruses, from attachment and entry into host cells to replication, assembly, and release. The course also examines how viruses evade the immune system and contribute to diseases in humans, animals, and plants. 

A significant part of virology involves understanding viral pathogenesis, epidemiology, and methods of prevention, including vaccines and antiviral drugs. Laboratory techniques such as viral culture, molecular diagnostics, and genetic sequencing are covered to equip students with practical skills for detecting and analyzing viruses. The course may also address emerging and re-emerging viral infections, their impact on public health, and strategies for controlling outbreaks. 

Virology integrates concepts from microbiology, immunology, and molecular biology, making it essential for students in medical, biological, and environmental sciences. It provides insights into the role of viruses in biotechnology, gene therapy, and vaccine development. The course helps students develop critical thinking skills necessary for research, diagnostics, and disease management in various fields related to public health and medicine.