1. MODULE THREE

2. OBJECTIVES To understand how micro-organisms are transmitted and spread To understand the chain of infection To be able to identify the key factors for developing an infecton

3. ROUTES OF TRANSMISSION INHABITINGESTINHALE INFESTINSTILINJECT INSERT

4. THE SPREAD OF INFECTION DIRECT CONTACT INDIRECT CONTACT TRANSFER FROM SITE TO SITE ON A PERSON PERSON TO PERSON EQUIPMENT CONTACT INJESTION INHALATION HAND TO MOUTH CONTACT

5. THE SPREAD OF INFECTION DIRECT CONTACT INDIRECT CONTACT TRANSFER FROM SITE TO SITE ON A PERSON PERSON TO PERSON EQUIPMENT CONTACT INJESTION INHALATION HAND TO MOUTH CONTACT

6. AGENT HOST ENTRY TRANSMISSION EXIT RESERVOIR CHAIN OF INFECTION Disseminator Chain of Infection

7. Key factors Psychological illness Hygiene Status Elderly and Young Physical illness and conditions Immune status Medical therapy