General introduction
15 important questions on General introduction
What is meant with latent peroid?
What is meant with incubation period?
What is meant with infectious period/period of communicability?
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What is the influence of less T-cells?
What makes smallpox such infectious?
With low level virulence:
With high level of virulence:
What is basic reproductive rate?
What is herd immunity?
What is the effective reproduction rate (R)?
What is herd immunity threashold? HIT
percentage of a susceptible population that needs to be protected by vaccination to stop an epidemic outbreak
What is meant with incidence/morbidity rate?
Where does DALY stand for and what does it mean?
YLD = I x DW x L
I= disease incidence
L= average duration of the case until remission or death
DW = disability weight (0-1)
What causes the emergence of Infectious Diseases (ID)?
What factors cause gain of virulence of pahtogens?
- Antibiotic resistance (MRSA or superbug)
- anti-retrovial drugs (HIV)
- antigenic drift influenza (by mutations)
- antigenic shift from animals to humans (by rearrangement)
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