Emergence and Spread of Infection Flashcards
(30 cards)
When is a patient most infectious?
At the end of the incubation period before symptoms truly begin to show
What is the latency period?
Period in which the pathogen is not multiplying or infectious
What is the incubation period?
Multiplying and highly infectious at the end of it
What is the prodromal period?
Highly infectious but hard to diagnose because of broad symptoms
What is the convalescent period?
Getting over the disease
What is a source?
The place the host acquires the disease
What is a reservoir?
Where the pathogen grows and multiplies (can be the same as the source)
If an infection always cause a disease what quality does it have?
100% morbidity
What is the difference between a venereal disease and an STD?
Venereal diseases is strictly sexually transmitted and an STD is not always sexually transmitted such as HIV
What is a subclinical carrier?
A person that is not showing signs of infection but is infected
What is an infection?
Invasion of normal sterile tissues by an organism
What is a latent carrier?
A person that has a disease that has not replicated or with limited replication (ie herpes)
What is a non communicable infection?
An infection that cannot be transmitted from person to person (human is the reservoir but not the source)
What is Ro?
The number of people infected by one patient
What is incidence?
The number of new cases over a period of time
What is prevalence?
The total number of patients in an outbreak
What are the 5 ways fecal oral transmission occurs?
Fingers, food, flies, feces, fomites
What is the hardest transmission to stop?
Air/droplet
What is a vector?
Living non vertebrate transmitter
What is a biological vector?
A host
What is a mechanical vector?
A passive carrier
What are the two types of vertical transmission?
Intrauterine (congenital)
Perinatal (birth canal/milk/contact)
What does ToRCHS stand for?
Toxoplasma gondii Rubella Cytomegalovirus Herpes & HIV Syphilis
How is disease index calculated?
Morbidity/Infected
