Chapter 4 Flashcards
1
Q
Reservior
A
Natural habitat where a pathogen is maintained
2
Q
3 Major reservoirs in humans
A
Humans
Animals
Non-living things
3
Q
Virus transmission
A
non-motile, but can take a free-ride
highly host specific
4
Q
Human-human
A
Horizontal Transmission
Direct or close contact
Indirect contact via fomite
Vertical Transmission: to offspring
5
Q
Fomite
A
contaminated non-living object
6
Q
Animal-> human
A
Zoonosis
Zoonotic Transmission
Human is often dead-end host
7
Q
Vector-> human
A
Living vectors: blood-feeding arthropods
Arboviruses: Arthropod-borne ex. Zika and yellow fever
Inanimate vectors(consumed or injected)
8
Q
Portal of entry
A
A specific route used by a pathogen to enter the body Natural openings(9 or 10) Man-made Animal-made Involve 5 membrane tracts Intact skin (rare)
9
Q
5 membrane tracts
A
Respiratory (most common) Conjunctiva Gastrointestinal Urinary Genital
10
Q
Transmission of Plant Viruses
A
Mechanical Damage
Seeds
