Flashcards in Epidemiology and Infection Control Deck (13):
What are the various patterns of infection?(5)
Epidemic, Pandemic, Endemic, Sporadic and outbreak!
- usually high number of infected individuals in a population at one time. Can range from the small scale up to nationwide
ex: Ebola in West Africa
- a world-wide epidemic
- constantly present, usually affecting a small proportion of the population
ex: MRSA is endemic to many hospitals
- individual cases in geographically separate areas
- incidents are not related
- a number of cases in a short period of time in the same area
- assumed to be related
What are the various carriers?
aute carrier and chronic carrier
What is a carrier?
- infected individual showing no obvious sign of disease
Explain acute carrier!
- before symptoms appear
- carrier state of short duration
Explain chronic carrier!
- long term
- may have recovered from the disease but still harbour pathogens
- may be asymptomatic
ex: Hepatitis, TB, typhoid fever
Types of immunization?
- passive (antibody preparation)
- active (vaccines)
Explain active immunization!
- modified/purified pathogens or their product
- stimulate host to produce own specific immunity
-a few weeks lag before protection, but long lasting