enters the body, multiply, and cause injury or disease.
local infection
restricted to a small area of the body
systemic infection
entire body is affected rather than a single organ or body part
communicable infections
caused by some pathogenic microbes that are able to spread from person to person.
nosocomial infections and healthcare-associated infections
infections acquired in hospitals and other healthcare facilities.
pathogens
microbes that are able to cause disease
nonpathogens
microbes that do not cause disease under normal conditions.
oppurtunistic pathogen
reside in the human body and do not cause infection in a healthy individual but become pathogenic when the immune system is compromised.
infectious agent
also known as causative agent, the pathogenic microbe responsible for causing an infection.
reservoir
source of an infectious agent
viability
ability of the microbe to survive in an object
virulence
degree to which the microbe is capable of causing disease
exit pathway
infectious agent is able to leave a reservoir host
means of transmission
method an infectious agent uses to travel from a reservoir to a susceptible individual.
airborne transmission
dispersal of infectious agent that can be inhaled
contact transmission
most common means of transmitting infection
direct contact transmission
physical transfer of an infectious agent to a susceptible host through close or intimate contact
indirect contact of transmission
occur when a susceptible host touches contaminated objects
droplet transmission
transfer of an infectious agent to the mucous membranes of the mouth, nose, or conjunctiva of the eyes of a susceptible individual via infectious droplets
vector transmission
transfer of an infectious agent carried by an insect, arthropod, or animal.
vehicle transmission
transmission of an infectious agent through contaminated food, water, or drugs (ingestion)
entry pathway
way an infectious agent is able to enter a
susceptible host
susceptible host
someone with a decreased ability to resist infection
infection-control program
set of procedures that ensure the protection of people working in the institution
hand hygiene
one of the most important means of preventing the spread of infection
routine handwashing
procedure uses plain soap and water to mechanically remove soil and transient bacteria (20 seconds)
hand antisepsis
uses antimicrobial soap to remove transient microorganisms, which is also the kind of soap used when washing the hands with the 2-6 minutes surgical hand scrub prior to performing surgical procedures.
HICPAC
Healthcare Infection Control Practices Advisory Committee
CDC/HICPAC
recommend the use of alcohol-based antiseptic hand
cleaners in place of hand washing as long as the hands are not visibly soiled
standard precautions
used in the care of all patients and are meant to be the number one strategy for successful nosocomial infection control. assume that every individual is potentially infectious
universal precautions
blood and certain body fluids of all individuals were considered potentially infectious. always practiced in the laboratory
transmission-based precautions
used for patients known or suspected to be infected or colonized with a significant pathogen that requires special precaution
blood-borne pathogens
microorganisms in the human blood which are infectious and can cause diseases. Most common pathogens include, hepatitis B (HBV), hepatitis C (HCV) and Human Immunodeficiency Virus (HIV).
biohazard
Anything harmful or potentially harmful to health
biosafety
used to prevent and protect clinical laboratories from harmful incidents caused by laboratory specimen that are potentially biohazard
electric shock
condition when there is not enough blood that
circulates back to the heart which results to inadequate supply of oxygen in the body potential hazards associated with the use of electrical equipment