The best descriptive term for the resident microbes is
commensals
Resident microbiota is commonly found in the
urethra
Normal resident microbes are absent from the:
lungs
The general phenomenon whereby a person's resident microbiota play an important role in helping to protect against intruding microorganisms by limiting attachment sites, and/or altering the local chemical and physiological environment of the body is called
microbial antagonism
The human body is colonized at/during the birthing process; in utero the body is sterile.
True
Any characteristic or structure of the microbe that increases the ability of the organism to cause infection or a disease state is called a fomite.
False
The specific action of hemolysins is to
damage red blood cells
The most common resident microbiota in the mouth is Streptococcus species.
true
The portal of entry into the human body for the greatest number of pathogens is the:
the respiratory tract
The infectious dose is the:
the minimum number of organisms necessary to cause disease
Which of the following is(are) considered virulence factor(s)?
-bacterial capsules
-fimbriae
-exotoxins
-all of
theseall of these
all of these
Endotoxins are only produced by Gram (-) bacteria.
True
In the phases of clinical infectious disease, which of the following is a short period marked by mild signs and symptoms?
the prodromal stage
A(n) _____ infection is an infection that compounds a pre-existing one
secondary
The term ____ infection is used to refer to the initial infection in a previously health individual, which can later be complicated by an additional infection caused by a difference microbe.
primary
An infection that remains confined to the initial infection site is called a(n) ____ infection.
localized
The portal of entry for pathogens that are transmitted through sexual contact is the _____ tract.
Urogenital
True or False: A disease is considered communicable when the infectious agent can be transmitted from infected host to new host and establish infection in that host.
True
When a virus persists inside the host in an inactive state, this is specifically referred to as _____
latency
Disease _____ is the total number of cases of a particular disease within the entire population.
prevalence
Damage from excess host immune responses is a form of ____ ____
indirect damage
A ____ ____ is a property of a microbe that improves their invasiveness or ability to evade host defenses in order to cause disease.
virulence factor
The collection and keeping of data for a large number of diseases seen by the medical community and reprotable to public health authorities is called ____
surveillance
epidemic across continents
pandemic
when prevalence of a disease is increasing beyond what is expected
epidemic
when occasional cases are reported at irregular intervals
sporadic
disease that exhibits a
relatively steady frequency over a long
period of time in a particular geographic locale
endemic
number of people afflicted with a certain disease
Morbidity rate
the total number of deaths in a population due to a certain disease
Mortality rate
as person begins to respond to infection, symptoms decline
convalescent period
time from initial contact with the infectious agent to the appearance of first symptoms; agent is multiplying but damage is insufficient to cause symptoms; several hours to several years
incubation period
If a nurse transfers a pathogen between patients without becoming infected herself, the nurse has acted as the
Passive Carrier
A ______ infection is acquired in a hospital
Nosocomial
Virulence factors include
A)toxins
B)enzymes
C)capsules
A short period early in a disease that manifests with general malaise and achiness is the
sequela
The presence of a few bacteria in the blood is termed
bacteremia
A/an ________ is a passive animal transporter of pathogens.
C)mechanical vector
A general term that refers to an increased white blood cell count is
leukocytosis
A positive antibody test for HIV would be a _______ of infection
A)sign
Which of the following would not be a portal of entry?
test the effects of pathogen on humans
cause disease when the host's defenses are compromised or when they
grow in part of the body that is not natural to them
-Pseudomonas
sp & Candida albicans
Opportunistic pathogens
toxic to white blood cells
leukocidins
microbes enter the body and remains confined to a specific tissue
Localized infection
Endogenous infectious agents arise from microbes that are:
The patient's own normal flora
The primary, natural habitat of a pathogen where it continues to exist is called the:
Reservoir
Someone who inconspicuously harbors a pathogen and spreads it to others is a:
Carrier
An animal such as an arthropod, that transmits a pathogen from one host to another is a:Vector
Vector
animals that participate in life cycles of pathogens and transmit pathogens from host to host are:
Biological vectors
microbes that occupy the body for only short periods
Transient flora
An infection harbored in animals but naturally transmissible to humans
zoonosis