Micro: Normal Flora
what does normal flora refer to
bacteria and fungi that are permanent residents of different body sites
should internal organs have normal flora
no
what is the carrier state
colonization by a potential pathogenic organism that can be a source of infection to others
what is the important normal flora of the skin
staph epidermidis
what is the improtant normal flora of the nose
s. aureus
what is the improtant normal flora of the mouth
strep viridans
what is the important normal flora of the dental plaque
strep mutans
what is the important normal flora of the gingival crevicles
bacteroides, fusobacterium, streptococci, actinomyces
what is the important normal flora of the throat
s. viridans
what is the important normal flora of the color
bacteroides fragilis
E. coli
what is the important normal flora of the vagina
lactobacillus
e. coli
group B strep
what are the roles of normal flora
1. cause disaes in immunocompromised or debilitated individuals
2. can be pathogenic if outside normal anatomic location
3. interfere with colonization by potential pathogens and so they are protectve; antibiotics disrupt the normal flora
4. nutritional funciton: make vitamin K and B vitamins
where is the bacteroides species considered normal flora
throat colon vagina
where is candida albicans considered normal flora
mouth colon vagina
where is clostridium considered normal flora
colon
where is diptheria considered normal flora
nasopharynx
skin
vagina
where is enterococcus faecalis considered normal flora
colon
where is e. coli and other coliforms considered normal flora
colon
vagina
outer urethra
where is gardnerella considered normal flora
vagina
where is haemophilus considered normal flora
nasopharynx, conjunctiva
where is lactobacillus considered normal flora
mouth
colon
vagina
where is neisseria considered normal flora
mouth
nasopharynx
where is propionibacterium considered normal flora
skin
where are pseudomonas aeruginosa considered normal flora
colon, skin
where are staph epidermidis considered normal flora
skin nose mouth vagina urethra
where is s. aureus considered normal flora
nose, skin
what is a pathogen
organism capable of causing disease
what is an opportunistic pathogen
unusual causes of diseas in healthy individuals but take the opportunity to cause disaes in immunocompromised patients
what is virulence
a measure of how readily an organism will cause disaes
what are virulence factors
characteristics of the organism that are responsible for enabling it to cause disease
what does something being "communicable" mean
infectiomns that are spread from host to hose
what is an epidemic
infection in a population that occurs much more frequently than usually
what is a pandemic
worldwide epidemic