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What is Infectivity?
% of exposed that become infected (# of ppl who are exposed that will eventually become infected)
What’s Pathogenicity?
% of ppl that become clinically ill (of the ppl infected, how many of them will become clinically ill=show symptoms)
What’s Virulence
% of clinically ill ppl who will become servilely ill or die.
What is a Carrier?
a person who harbors a specific agent with the absence of discernible clinical disease & can serve as a potential source of infection.
A Carrier is a person who maybe?
Colonized
Infected & Asypomtimatic
preclinical/incubation period
recover from a acute disease
Is the Carrier Status short or lengthy?
dependent on illness (it can be either)
What’s an Endemic?
is a disease that occurs at it’s regular rate within a time frame that is expected of the disease.
What’s an Epidemic?
is a disease that occurs outside the regular/usual state(rate) of infection. (it’s above what is expected)
What’s a Pandemic?
Happening in multiple countries & contents
What’s sporadic disease?
ideas that happens randomly in population
What’s a Hyperdenmic?
a disease that’s more than a epidemic but doesn’t count as a pandemic.
What are the 13 steps in Outbreak Investigation?
Prepare Field work
Establish the essence of an outbreak
Verify Diagnosis
Construct a working case definition
Find cases systematically & record info
Perform descriptive epidemology
Develop Hypothesis
Evaluate Hypotheses Epidemiologically
As necessary, reconsider, refine & re-evual hypotheses
Compare & recline with laboratory &/or environmental studies
Implement control & prevention measures
Initiate or maintain surveillance
communicate findings
In an Outbreak investigation what does step 1. Prepare for Field Work look like?
scientifically investigate the issue & equipment
get ready team members & collaborators
In an Outbreak investigation what does step 2. Establish the existence of an outbreak look like?
cluster vs. outbreak (related or not related)
How to check the expected
Take into account factors of: disease, political issues, public relations & timing
In an Outbreak investigation what does step 3. Verifying the Diagnosis look like?
reviewing clinical/lab results
visting patients
summarize clinical features
In an Outbreak investigation what does step 4. Constructing a Working case definition look like?
a case —> person with the condition
Having a Clinical deification (illness with sudden onset symptoms)
Having Laboratory criteria for diagnosis (potisitve tests)
Working field Case Classification
In an Outbreak investigation what does step 5.Finding cases systematically & record info look like?
Identifying info
demographics
clinics
risk factors
reporters
In an Outbreak investigation what does step
In an Outbreak investigation what does step
In an Outbreak investigation what does step
In an Outbreak investigation what does step
In an Outbreak investigation what does step
In an Outbreak investigation what does step
In an Outbreak investigation what does step
In an Outbreak investigation what does step
In an Outbreak investigation what does step
In an Outbreak investigation what does step