The invasion of disease-causing organism in body.
Microorganisms - Germs - Microbes
Tiny living things
Bacteria or viruses, cause disease.
Single cell, some beneficial to humans while others cause disease.
Single or multi cell, Plant cause disease.
Smallest known infection agent.
Single cell, animal, live in water, cause disease.
Bacteria, common cause of infection
Bacteria, common cause of chest/throat infection
Bacteria can grow well on remains of food left in patient area
Bacteria grow well here.
Require oxygen to live
Bacterias worst enemy
Favors bacteria, grows rapidly.
Bacteria live on dead matter
Bacteria live on living matter
Disease that can spread
Chain of infection
Infectious disease is transmitted and developes in persons body
Pathogen that causes infection/disease
Reservior of Agent
Pathogen lives and reproduce
Portal of Exit
Pathogens leave resevior(body secretions)
Route of Transmission
Pathogen is transmitted from the reservior to new hosts body
Portal of Entry
Pathogens enter the body
Individual who harbors pathogens
Person with disease but, shows no signs
Object that is contaminated with pathogens
Transfer of microorganisms by contact with body surfaces
Transfer of microorganisms by droplets propelled through air
Transfer of microorganisms by evaporated droplets in air
Infection acquired in health care facility
Refers to disease that can spread through people
Medical Asepsis - Clean Technique
Practices to maintain a clean environment
Free from all microorganisms
Refer to object/area not contaminated by pathogens
Refer to object/area has been contaminated
Needles, scalpels, razor blades.
Unprotected contact with pathogens
PPE: prevent contact with body fluids
Use chemical substance to kill most microorganisms
Killing all microorganisms including spores.
Cleaning of patient room after discharged.
Specific procedures to prevent patient from infecting others
Guidelines applying to care of all patients
Transmission Based Precautions
Isolation procedures for patients with contagious disease
Microorganisms normally present in human body
Can survive without oxygen