Note: The below given guide is to help you focus on the topics that you need tobe thorough. Be aware that it cannot be used solely for the exam preparation. Itcannot replace lecture notes, and text book on the topics discussed in the class..Chapter 13oKoch hypothesisoResident flora, transient flora, colozination, infection, infectious disease, true pathogen,opportunistic pathogen virulence,oList portals of entry, and a agent of disease for each.oList several common portals of entry. Note what preferred portal of entry indicates.oInfectious dose: importanceoDistinguish between pathogenicity and virulence.oFactors contributing to virulence: adherenceoDescribe what is meant by invasiveness, and the mechanisms and factors that affect invasiveness. (capsules, cell wall, enzymes, antigenic variation, host cell penetration)o
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