Primary Infection- initial infection with a parasite in the host
Reinfection- subsequent infection by the same parasite
Secondary Infection- a new parasite infecting an IC host
Focal infection- infection at a localized site
Cross infection- new infection est. From another host in a pt already suffering from ds
Nosocomial infections- HIC
Iatrogenic infection- through any therapeutic procedure
Causing an Infection
The endogenous – disease originates within the body. Ex: metabolic disorders, congenital abnormalities, tumors.
The exogenous – disease originates outside the body. Ex: chemical agents, electrical shock, trauma.
Nosocomial – acquired by an individual in a health care facility (workers to a patient). Many are antibiotic-resistant, life-threatening.
Opportunistic – occur when the body’s defenses are weak. Ex: pneumonia w/AIDs.
Source of Infection
- Humans from pt or carrier
- A healthy carrier
- Convalescent carrier
- Temporary carrier
- Contact carrier
- Paradoxical carrier
- Animals
- Insects vectors
- Mechanical vector
- Biological vector
- Soil and water
- Food
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