After studying this chapter the students will be able to,
• Study the importance of viruses causing disease in humans
• Study the classification, structure and cultivation of Viruses.
• Study viruses, their pathogenesis, clinical feature of viral diseases and its treatment and prophylaxis
•.Study the methods of collection, and processing of the sample and molecular diagnosis of viral infections.
1. Evolutionary Origin of viruses
2. Cultivation of Viruses
3. Herpes Viruses
4. Hepatitis Viruses
5. Rabies Virus
6. Human Immuno Deficiency Virus
7. Arbo Virus
Viruses are infectious agents with size ranging from about 20 nm to 300 nm in diameter and contain only one type of nucleic acid (RNA or DNA) as their genome. The nucleic acid is encased in a protein shell, which may be surrounded by a lipid membrane. The entire infectious unit is termed as virion. Viruses are obligate intracellular parasite, they replicate only in living cells. The study of virus is called as virology . Martinus Beijerinck is known as the Father of Virology.