Introduction
A infectious disease is an illness caused due to a particular infectious (biological) agent or its toxic products which are capable of being directly or indirectly spread from man to man, from animal to man, from animal to animal, or from the environment (through air, water, food, etc..) to man
Invasion is the process in which micro-organism enter the host cell
•Virulence is the ability of an agent (micro-organisms) to cause disease after it has invaded the host.
The acquisition means of pathogens
•Direct contacts skin to skin or skin to mucous membrane •Indirect contact droplets or body secretions •Air born mechanisms inhalation of pathogens •Vehicle borne mechanisms contaminated food, water, drugs •Vectors animals or insects
Transmission of infectious diseases
•Transmission of infection from infected patient to dental health workers •Transmission of infection from infected workers to the general public. •Transmission of infection from infected patient to another.
The chain of infection
•Virulence •Number of micro-organism
•Susceptible host •Portal of entry
The common infectious condition
• Dental patients and Dental Health care Workers may be exposed to a variety of micro-organisms via blood or oral or respiratory secretion • Including • Viral hepatitis hepatitis B&C are the more prevalent to dental health workers • Herps virus infections herps simplex is the more prevalent to dental health workers • Syphilis • Acquired Immune Deficiency (AIDS) caused by human immunodeficiency virus HIV
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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