epi exam 3 questions & answers
graded A+ passed
what 2 infectious diseases are leading cause of death in us - ANS ✔✔influenza and pneumonia
what % of mortality worldwide do infectious/parasitic diseases account for - ANS ✔✔20
respiratory infections account for ___ of mortality worldwide - ANS ✔✔7%
infectious is spread through (2) ways to who? - ANS ✔✔1. illness due to specific infectious agent
or toxic products
2. transmission from infected person/animal/reservoir
spread to susceptible host
WHO priority list of disease - urgent - ANS ✔✔COVID 19
crimean congo hemorrhagic fever
ebola/marburg
MERS & SARS
zika
etc.
WHO priority list of disease - serious - ANS ✔✔HIV
,TB
malaria
avian influenza
dengue
epidemiologic triad - ANS ✔✔model used to describe the etiology of infectious disease
environment, agent, host
infectious disease agents include - ANS ✔✔specific microbes and vectors involved in the cycle of
disease transmission
ex: bac, viruses, fungi, prions etc.
infectivity - ANS ✔✔capacity of an agent to enter and multiply in a susceptible host and thus
produce infection or disaese
R0 (R not) - ANS ✔✔proportion of persons exposed who become infected
the # of ppl that 1 sick person will infect
virulence - ANS ✔✔severity of the disease produced
whether disease has severe clinical manifestations or is fatal in a large # of cases
proportion of persons who become severely ill or die
, toxin - ANS ✔✔toxic substance made by living organisms
ex: botulism, TSS
some infectious disease agents instead of acting directly produce toxins that cause infection
parasitic disease - ANS ✔✔infection caused by a parasite
parasite - ANS ✔✔organism that lives on or in a host and gets its food from its host
ex: amebiasis, malaria, chagas
other factors related to host responses - ANS ✔✔incubation period
subclinical illness
generation time
carrier status
immunity - ANS ✔✔host's ability to resist infection by the agent
active or passive
active immunity - what causes it? how long does it last? - ANS ✔✔immunity developed as a
result of infection with microbial agent
also acquired via vaccine that contains antigen
graded A+ passed
what 2 infectious diseases are leading cause of death in us - ANS ✔✔influenza and pneumonia
what % of mortality worldwide do infectious/parasitic diseases account for - ANS ✔✔20
respiratory infections account for ___ of mortality worldwide - ANS ✔✔7%
infectious is spread through (2) ways to who? - ANS ✔✔1. illness due to specific infectious agent
or toxic products
2. transmission from infected person/animal/reservoir
spread to susceptible host
WHO priority list of disease - urgent - ANS ✔✔COVID 19
crimean congo hemorrhagic fever
ebola/marburg
MERS & SARS
zika
etc.
WHO priority list of disease - serious - ANS ✔✔HIV
,TB
malaria
avian influenza
dengue
epidemiologic triad - ANS ✔✔model used to describe the etiology of infectious disease
environment, agent, host
infectious disease agents include - ANS ✔✔specific microbes and vectors involved in the cycle of
disease transmission
ex: bac, viruses, fungi, prions etc.
infectivity - ANS ✔✔capacity of an agent to enter and multiply in a susceptible host and thus
produce infection or disaese
R0 (R not) - ANS ✔✔proportion of persons exposed who become infected
the # of ppl that 1 sick person will infect
virulence - ANS ✔✔severity of the disease produced
whether disease has severe clinical manifestations or is fatal in a large # of cases
proportion of persons who become severely ill or die
, toxin - ANS ✔✔toxic substance made by living organisms
ex: botulism, TSS
some infectious disease agents instead of acting directly produce toxins that cause infection
parasitic disease - ANS ✔✔infection caused by a parasite
parasite - ANS ✔✔organism that lives on or in a host and gets its food from its host
ex: amebiasis, malaria, chagas
other factors related to host responses - ANS ✔✔incubation period
subclinical illness
generation time
carrier status
immunity - ANS ✔✔host's ability to resist infection by the agent
active or passive
active immunity - what causes it? how long does it last? - ANS ✔✔immunity developed as a
result of infection with microbial agent
also acquired via vaccine that contains antigen
