General Properties and Classification of viruses Dr AYMAN JOHARGY 3 rd Year Medicine Clinical Microbiology 2 nd Semester Lecture 1 3 rd Year Medicine Clinical Microbiology 2 nd Semester Lecture 1 LEARNING OUTCOMES Learning outcomes * Define viruses * Identify Viruses Structure and characteristics * Define viriods, prions, bactriophage, virulent * Know how viruses can be classified? * Recognize the effect of Sterilization and disinfections on viruses * Describe how viruses are a real threat to human life? * List families and members of DNA viruses * List families and members of RNA viruses At the end of this lecture you should be able to: OUTLINES * Why we study virology * History of virology * Origin of viruses * Definition of a Virus * Virus Structure * Virus characteristics * Terms * Virus classification * Sterilization and disinfections * Viruses are a real threat to human life * DNA viruses * RNA viruses WHY WE STUDY VIROLOGY? HISTORY OF VIROLOGY Latin Word Meaning Poison DEFINITTION, PROPERTIES AND STRUCTURE OF VIRUSES VIRUSES AND HUMAN CLASSIFICATION OF VIRUSES order - family - subfamily - genus - species - strain/type Viralis- Viridae- Virinae- Virus DR AYMAN JOHARGY VIRUS GENOMES DNA RNA Single Stranded Double Stranded Circular + or - Segmented Double Stranded Segmented HELICAL ICOSAHEDRAL STERILIZATION AND DISINFECTION OF VIRUSES DNA VIRUSES PARVOVIRIDAE POLYOMAVIRIDAE ADENOVIRIDAE HERPESVIRIDAE HEPADNAVIRIDAEPOXVIRIDAE RNA VIRUSES PICORNAVIRIDAE TOGAVIRIDAE FLAVIVIRIDAE REOVIRIDAE BUNYAVIRIDAE RHABDOVIRIDAE ARENAVIRIDAE RETROVIRIDAE ORTHOMYXOVIRIDAE PARAMYXOVIRIDAE CORONAVIRIDAE SUMMARY * Why we study virology * History of virology * Origin of viruses * Definition of a Virus * Virus Structure * Virus characteristics * Terms * Virus classification * Sterilization and disinfections * Viruses are a real threat to human life * DNA viruses * RNA viruses