WITH ACCURATE ANSWERS
'latent' stage correct answer The period between exposure and infection is called
'latent period', since the pathogen is present in a 'latent' stage, without clinical
symptoms or signs of infection in the host.
5 W of epidemiology: correct answer What is the health related state such as the
disease
Who describes the person that are affected by the health event
Where is the place that it occured
When is the time
Why is all about the cause
Age of degenerative and man-made disease correct answer where mortality was
low and life expectancy was greater than 50 years
because we control chronic diseases better
Age of pestilence and famine correct answer where mortality was high and life
expectancy was 20-40 years
Age of receding pandemics correct answer where the mortality started to decline
and life expectancy was 30-50 years
because we starting to control infectious diseases
Airborne transmission: correct answer Occurs when droplets or dust particles
carry the pathogen to the host and cause infection.
, This may result when a person sneezes, coughs, or talks, spraying microscopic
pathogen-carrying droplets into the air that can be breathed in by nearby
susceptible hosts.
It also occurs when droplets are carried through a building's heating or air-
conditioning ducts or are spread by fans throughout a building or complex of
buildings
Example-respiratory viruses, pertussis, pneumococcal pneumonia, diphtheria,
rubella
Analytic correct answer looks at the cause, what can we learn about causeul
relationships.
Determinants and the causal factors looking at the how and why.
Analytic studies correct answer randomized trials, cohort studies
Biological transmission: correct answer When the pathogen undergoes changes as
part of its life cycle while within the host/vector and before being transmitted to
the new host.
Example-malaria when the female Anopheles mosquitoes blood meal is required
for the Plasmodium protozoan parasite to complete its sexual development cycle.
Biostatics correct answer Is the use of statistics of biological phenomenon.
Enables us to test a hypothesis to determine whether there are associations
between exposure and outcomes and differences between groups
CDC mission correct answer Is to protect the health, safety, and security threats
of the country from both foreign and in the U.S. in order to increase the health
security of the nation.