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Disease Transmission PowerPoint Presentation

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Description : Check out this medical presentation on Influenza (Flu), which is titled "Disease Transmission", to know about the Modes of Disease Transmission (Direct contact, Indirect contact, Droplet, and Airborne).

Tags : Influenza, Flu, Disease Transmission, Modes, Direct contact, Indirect contact, Droplet, Airborne

Published on : Aug 29, 2021 | Views : 2226 | Downloads : 1

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Slide 1-

Disease Transmission
Slide 2-

Objectives Review disease transmission Discuss standard precautions Describe and demonstrate transmission-based precautions
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Modes of Disease Transmission Direct contact Indirect contact Droplet Airborne
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Direct Contact Transmission Microbes directly transferred from an infected person to another person Examples Contact with blood or other body fluids Ungloved contact with a scabies-infested patient Ungloved contact with wounds or mucous membranes
Slide 5-

Indirect Contact Transmission Microbes transferred through contaminated intermediate object Examples Healthcare personnel not performing adequate hand hygiene between patients Sharing medical equipment without cleaning or disinfection between patients Defective medical equipment allowing for inadequate disinfection or sterilization
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Droplet Transmission Respiratory droplets carrying infectious pathogens Generated during coughing, sneezing, talking, or certain medical procedures (e.g. suctioning) Droplets traditionally defined as > 5 µm Typically refers to distances within 3 feet of infected patient
Slide 7-

Airborne Transmission Dissemination of droplet nuclei containing infectious agents Dispersed over long distances Face-to-face contact not required Special ventilation systems are required to prevent airborne transmission
Slide 8-

Standard Precautions (1) Group of infection prevention practices that apply to ALL patients Based on principle that the following can contain transmissible infectious agents: Blood and body fluids Secretions Excretions (except sweat) Non-intact skin Mucous membranes
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Standard Precautions (2) Applied during patient care based on nature of healthcare worker-patient interaction Dependent on anticipated blood, body fluid, or pathogen exposure Intended to protect both healthcare worker and patient
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Standard Precautions (3) Education and training are critical and include the following elements: Hand hygiene Respiratory hygiene/cough etiquette Personal protective equipment (PPE) Safe injection practices Environmental considerations
Slide 11-

Transmission-Based Precautions Used when route of transmission is not completely interrupted using standard precautions alone Always used in addition to standard precautions Categories of precautions Contact Droplet Airborne
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Contact Precaution Basics Intended to prevent spread of infectious agents transmitted by direct or indirect contact Applied when excessive wound drainage, fecal incontinence, or other body discharges increase the potential for environmental contamination
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Contact Precautions Single-patient rooms are preferred For multi-patient rooms, > 3 feet separation is recommended between beds Healthcare personnel should wear gown and gloves for ALL patient interactions PPE donned upon entry and discarded before exiting room
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Droplet Precaution Basics Intended to prevent spread of infectious agents transmitted by respiratory secretions or mucous membrane contact Droplets do not travel far and do not require special ventilation systems
Slide 15-

Droplet Precautions Single-patient rooms are preferred For multi-patient rooms, > 3 feet separation between beds and drawing the curtain is recommended Healthcare personnel should wear mask upon entering room Patients should wear mask (if tolerated) when transferred out of room Follow respiratory hygiene/cough etiquette
Slide 16-

Airborne Precaution Basics Prevent transmission of infectious agents that remain infectious in air over long distances An airborne infection isolation room (AIIR) for placement of patient Single-patient room Special ventilation system Healthcare personnel should don a fit-tested N95 mask before entry
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Airborne Precautions Until AIIR can be instituted, the following should reduce likelihood of airborne transmission Mask patient Place patient in private room Provide N95 or higher level respirator for staff
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Reference: Guideline for Isolation Precautions: Preventing Transmission of Infectious Agents in Healthcare Settings 2007 (CDC) http://www.cdc.gov/hicpac/pdf/isolation/Isolation2007.pdf
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Example: Key to abbreviations: see page 94
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Group Exercise (1) Use Appendix A for guidance Each group has been assigned a disease Please complete the table affiliated with your disease Type of precautions Type of PPE Room placement Discontinuation of precautions
Slide 21-

Group Exercise (2) Use completed table to set up patient’s room Demonstrate how to set up PPE / hand hygiene Classroom discussion
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Norovirus
Slide 23-

Norovirus
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Influenza
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Influenza
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Clostridium difficile (C. diff)
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Clostridium difficile (C. diff)
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Streptococcus pneumoniae (single patient)
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Streptococcus pneumoniae (single patient)
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Streptococcus pneumoniae (outbreak)
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Streptococcus pneumoniae (outbreak)
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Pulmonary Tuberculosis
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Pulmonary Tuberculosis
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Scabies
Slide 35-

Scabies
Slide 36-

RSV (Respiratory Syncytial Virus)
Slide 37-

RSV (Respiratory Syncytial Virus)