transmission of infection Flashcards
most cost effective intervention for world wide disease
hand washing
what is produced by immune system and can either destroy or inactive pathogens
antibodies
special group or type of antibodies that render a toxic substance harmless
antitoxins
most microorganism that cause disease are called
pathogens (germs)
bacteria sometime call germs or microbes are called
one celled microorganism that grow best in warm dark damp/dirty environments
bacteria are classified as what 2 categories
non pathogenic and pathogenic
what are non pathogenic
NON disease producing HARMLESS BENEFICIAL approx 70% of all bacteria many live on surface of skin medical applications cause decay of refuse or vegetation LIVE ON DEAD OR DECAYING ORGANIC MATTER = SAPHROCYTES
what are pathogenic
DISEASE producing can cause disease and live everywhere some cause infections, produce toxins (poison) spread easily via contamination
when a disease spread from 1 person to another via contamination
contagious or communicable
what simple action can prevent pathogens from spreading
washing hands before and after treatment
examples of contagious bacterial diseases include
strep throat staph infection impetigo
bacteria causing infection by
invading body thru break in skin or natural openings like mouth nose eyes ears
an infections occurs
when insufficient numbers of antibodies are produced by the Boyd defense immune sys to fight harmful bacteria
majority of skin infections are caused by
staph and strep bacteria
problems such as skin infections can be
a contraindication (reasons for withholding a particular treatment)
highly resistant bacterial infections include
MRSA, MYCOBACTERIUM
MRSA
(methicillin resistant staphylococcus aureus)
HIGHLY contagious
enters skin thru open wounds can cause staph infections may appear as pimples or boils resistant to most antibiotics many infected people DONT show symptoms (disinfection procedures are required to reduce exposure
mycobacterium
contagious bacteria often found in soil or water including tap water treated with chlorine to prevent pathogens from entering avoid having cracked or dry skin *** sinks pedicure bowls area using water are required for method prevention
virus: submicroscopic infectious particle
smaller than bacteria require a host to multiply otherwise can’t survive not treatable with antibiotics invade cells and redirect to produce more virus symptoms may appear 10-14 days of exposure MOST CONTAGIOUS JUST DAYS BEFORE SYMPTOMS APPEAR
what can be preventative measure for certain virus such as hepatitis
vaccinations
3 examples of diseases
respiratory gastrointestinal infections
chicken pocks
measles
infection control
term used to describe efforts to prevent the spread of communicable disease
cleaning
standards apply to removing dirt debris potential pathogens to aid in slowing the growth of pathogens
disinfection
standards required products to kill certain pathogens (bacteria, fungi, virus) w exception of spores
sterilization
standard state of all microbial life including spores must be killed or destroyed
cleaning
removal of surface or visible dirt and potential pathogens using soap detergent or chemical cleaner followed by clean water rinse preparation step for non porous items before disinfecting reduces number and slows growth of pathogens on both porous and nonporous surface
cleaning is performed on
noncritical objects (objects that come in contact with unbroken skin)
facts about cleaning
does NOT kill pathogens but helps slow and reduce growth
reduces amount of organic matter that contributes to growth of pathogens
requires mechanical or scrubbing process that causes pathogens to loosen for removal
ALONE DOES NOT MAKE IT SAFE TO USE
sanitizer
chemical product used to reduce pathogens on surface that are nonporous surface
antiseptic
**waterless sanitizer can be applied to skin to reduce pathogens
what % of isopropyl alc or hydrogen peroxide can be used as topical antiseptic for the skin
70%
change air conditioner and forced air filters
as needed
disinfection
kills certain pathogens w exception of spores on nonporous surface tools and multiuser suppliers
disinfectants
chemical products used to kill certain pathogens (bacteria virus fungi) w exception of spores on nonporous surface
* can be toxic, regulated by law thru governing agency
*works well on nonporous & multiuse supplies but can be harmful to skin
bactericidal kills
Bacteria
fungicidal kills
fungi
virucidal kills
virus