infection control Flashcards
non-pathogenic
doesn’t produce disease
pathogenic
causes infection and disease
aerobic
requires oxygen to live
anaerobic
doesn’t require oxygen to live
bacteria, protozoa, fungi, rickettsiae, viruses, helminths
6 classes of microorganisms
often considered cause of disease, some develop resistance to certain antibodies, they can be very difficult to cure,
bacteria
produce antibodies, live in body w/o problems, help break down dead organic matter, live on the roots of certain plants, converting nitrogen into a usable form.
some bacteria
one-celled, animal like organism, contains nucleus and other defined organelles,
protozoa
usually symbiotic, sometimes parasitic relationship, provide lots of drugs and food, bubbles in bread, champagne, and beer, cause lots of plants/animal disease, can be very difficult to treat.
fungi
rod-shaped, parasitic bacteria, live in tissues of ticks, fleas, and lice, transmitted to humans through bites, invade new host from within.
rickettsiae
small, infectious agent, require host, over 5,000 types, combine in multiple ways to produce disease, produces immune response in humans, treated with antiviral drugs.
virus
HIV, Hepatitis B, Ebola, Adenovirus, Influenza, Bacteriophage.
types of viruses
parasitic worm-like organisms, live inside host, feed off host, disrupt nutrient absorption, lead to weakness, excrete toxins, making host susceptible to other disease.
helminths
infection, local infection, systematic infection, endogenous, exogenous, nosocomial, opportunistic
types of infection
invasion of body by microorganisms
infection
uses host’s resources to multiply, interfere with normal function,
invading microorganisms
only specific portion of body is infected (pain, redness, heat, swelling, pus)
local infection
affects entire body (fever, aches, chills, nausea, vomit, weakness)
systematic infection
type of infection or disease that originates within body
endogenous
type of infection or disease that originates outside the body
exogenous
hospital acquired infection, transmitted by health care worker
nosocomial infection
occurs when body’s defenses are weakened
opportunistic infection
any sign of infection must be…
reported to health care provider
direct contact, indirect contact, airborne, vector borne (what type of infection)
transmitting infection
person to person, animal to person, mother to unborn child (how the virus is passed)
direct contact
pathogens are passed along inanimate objects
indirect contact
pathogens are carried through air, cling to surroundings and are spread
airborne