Infectious Disease 2 Flashcards
(22 cards)
Who is more susceptible to infectious disease?
older people
Characteristics of aging with infectious disease
- changes in immunity
- reactivation of dormant infections
- skin changes
- diminished reflexes
- prone to pneumonia
- fever
What types of dormant infections can be reactivated with aging?
- herpes zoster (chickenpox)
- TB
______ skin is more easily damaged
atrophic
Which reflexes are diminished with aging?
- cough
- gag
Why are older people more prone to pneumonia?
decreased bronchiolar elasticity
Why might fever not be a reliable sign of infectious disease for older adults?
lower basal body temp
A temp of _____ may signal infection for older adults
99-100
What is an infection?
organism establishes a parasitic relationship with the host
Immune response is produced by an organism through these:
- invasion
- multiplication
How does the immune response from an infection cause injury to the host?
- toxins from microorganisms
- tissue/cell death of the host
colonization
- microorganisms present in tissue
- don’t create systemic disease
colonized carrier/transmitter s/s
may not have s/s
Development of an infection depends on these:
- transmission mechanism
- proper environment
- susceptibility of the host
- pathogen may contaminate body surface and be destroyed by first line defenses
What does an elevated titer indicate?
- antibody against antigen
- no antibiotic necessary
- infection control to prevent spreading
What is the characteristic of a clinically apparent infection?
host injury with s/s
Ebola comes from these sources
- fruit bats
- monkeys
- person to person through secretions
Ebola: time from invasion to s/s
2-21 days
What is a latent period?
microorganism has replicated and is dormant
What is the period of communicability
time after latency where symptoms or transmission can occur
Ebola: period of communicability
after symptoms occur
How can a causative agent be passed with communicable diseases?
- directly
- indirectly
