Practical Virology: Virus Cultivation, Detection, and Diagnostic Techniques
Updated: Sep 5
https://doi.org/10.66715/cerebral-link/2026.v4.c9.8797 | Cerebral Link | Publish by Cerebral Publication Private Limited | 2026 | Volume 4 | Page 87-97 |ISBN: 978-81-689463-6-1 | Book Title: - Text-book of Practical Microbiology | Chapter 9: Practical Virology: Virus Cultivation, Detection, and Diagnostic Techniques
Dr. Mahak Jain, Associate Professor, Department of Microbiology, Heritage Institute of Medical Sciences, Varanasi, Uttar Pradesh.
Abstract
Practical virology encompasses the laboratory principles and techniques used for the cultivation, detection, identification, and diagnosis of viruses of medical importance. Unlike bacteria and fungi, viruses are obligate intracellular pathogens and therefore require living cells or suitable biological systems for their propagation, making their laboratory investigation technically distinct. This chapter provides a comprehensive overview of conventional and modern approaches used in diagnostic virology, beginning with appropriate collection, transportation, processing, and storage of clinical specimens. Fundamental methods of virus cultivation, including cell and tissue culture systems, embryonated eggs, and selected laboratory models, are discussed along with the recognition of viral growth through cytopathic effects, inclusion bodies, hemadsorption, and other characteristic changes. Laboratory detection techniques such as antigen–antibody assays, immunofluorescence, enzyme-linked immunosorbent assay (ELISA), and rapid immunochromatographic tests are described with emphasis on their diagnostic applications. Molecular techniques, particularly polymerase chain reaction (PCR), reverse-transcription PCR (RT-PCR), real-time PCR, nucleic acid amplification, and genomic sequencing, are highlighted for their sensitivity, specificity, and increasingly important role in modern viral diagnostics. Serological methods for detecting virus-specific antibodies and assessing immune responses are also considered. The chapter further emphasizes appropriate controls, interpretation of diagnostic results, contamination prevention, biosafety, biosecurity, and quality assurance in virology laboratories. Integration of conventional cultivation, immunological assays, and molecular technologies enables accurate and timely viral diagnosis and contributes significantly to patient management, outbreak investigation, epidemiological surveillance, infection prevention, and public health preparedness.
Keywords: Practical Virology, Virus Cultivation, Cell Culture, Viral Diagnosis, ELISA, PCR, RT-PCR, Molecular Diagnostics, Serology, Biosafety.
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