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micro
chapter 34
45
Biology
Undergraduate 3
04/27/2010

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Term
airborne pathogens
Definition
most pathogens survive poorly in air, thus, are effectively transmitted among humans only over short distances
Term
respiratory system normal flora
Definition
found in the upper respiratory tract
Term
streptococcus pyogenes
antibiotic ___
Definition
group A streptococcus; GAS
normal flora but can turn into strep throat
bacitracin
Term
erysipelas
Definition
very red inflammation
Term
certain GAS strains carry a lysogenic bacteriophage that ___
Definition
encodes exotoxins responsible for symptoms of toxic shock syndrome and scarlet fever
Term
lysogenic bacteriophage
Definition
lysogenic - latent, viral DNA in the bacterial chromosome
bacteriophage - virus that infects bacteria
Term
streptococcus pneumoniae is the causative agent of ___
Definition
pneumonia
Term
definitive diagnosis of streptococcus strains is by ___
Definition
culture
Term
diptheria
Definition
a severe respiratory disease that typically infects children
Term
diptheria is caused by ___
Definition
cornyebacterium diphtheriae
Term
cornyebacterium diphtheriae is spread by ___
Definition
airborne droplets
Term
diagnosis, prevention, and treatment of diphtheria
Definition
-must be isolated from the throat
-vaccine
-antibiotics
Term
pertussis
Definition
whooping cough
-an acute, highly infectious respiratory disease caused by bordetella pertussis
Term
diagnosis, prevention and treatment of bordetella pertussis
Definition
-flourescent antibody staining of a nasopharyngeal swab specimen
-vaccine soon after birth
-antibiotics
Term
tuberculosis is caused by ___
Definition
mycobacterium tuberculosis
Term
hansen's disease (leprosy) is caused by ___
Definition
M. leprae
Term
all mycobacteria are ___ due to the waxy mycolic acid content of their ___
Definition
acid-fast
cell walls
Term
tuberculosis is transmitted by ___
Definition
airborne droplets
Term
classified as 2 different types of infection
Definition
primary (initial)
postprimary (reinfection)
Term
___ immunity plays a critical role in the prevention of active disease after infection
Definition
cell-mediated
Term
primary tuberculosis infection
Definition
hypersensitizes the patient to the bacteria and alters the individual's response to subsequent exposures
Term
postprimary tuberculosis infection
Definition
chronic tuberculosis often results in a gradual spread of tubercular lesions in the lungs
Term
spread of tuberculosis is prevented by
Definition
hospitalization of patients in negative-pressure rooms and use of face masks for healthcare workers
Term
treatment of tuberculosis is
Definition
antimicrobial therapy with isoniazid
-9 month regimen
Term
hansen's disease (leprosy) is carried by
Definition
armidillos
Term
transmission of leprosy
Definition
direct contact and respiratory routes
Term
meningitis
Definition
an inflammation of the meninges that can be caused by viral, bacterial, fungal, or protist infections
Term
___ is needed to diagnose meningitis
Definition
CSF sample
Term
neisseria meningitidis is spread by __, it can grow on ___ and is diagosed with ___
Definition
bacterial meningitis
airborne, chocolate agar, florescent antibody
Term
meningococcal meningitis is transmitted by ___
Definition
viral meningitis
airborne
Term
measles
Definition
often epidemic disease caused by a negative-strand RNA virus called paramyxovirus
Term
measles is transmitted by
Definition
airborne
Term
mumps is caused by ___ and is spread by ___
Definition
paramyxovirus (like measles)
airborne
Term
mumps is characterized by ___ and can lead to ___ in adult men
Definition
inflammation of the salivary glands
sterility
Term
rubella is caused by
Definition
a single-stranded, positive-sense RNA virus of the togavirus group
Term
chicken pox is characterized by __ and caused by __
Definition
a systemic papular rash
varicella-zoster virus, a DNA herpesvirus
Term
shingles
Definition
chicken pox becomes a lifelong latent infection and can occasionally migrate to the skin surface
Term
colds are caused by ___ and are transmitted via ___
Definition
rhinovirus
airborne droplets
Term
most common infectious disease
Definition
cold
Term
symptoms of the common cold
Definition
rhinitis, nasal obstruction, watery nasal discharge, malaise
Term
15% of colds are due to __
10% of colds are due to __
Definition
coonaviruses
adenoviruses
Term
influenza is cused by
Definition
an RNA virus of the orthomyxovirus group
Term
influenza __ is the most important human pathogen
vaccine for this is __
Definition
A
IgA which prevents the flu from binding to the respiratory tract
Term
antigenic shift
Definition
major change in influenza virus antigen due to gene reassortment
Term
antigenic drift
Definition
minor change in influenza virus antigens due to gene mutation
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