PH Final Study Guide Flashcards
(77 cards)
what are the two types of direct mode of transmissions
-contact
-droplet
modes of transmissions: contact
direct transfer w/ very close contact (ex STD
what are the three types of indirect modes of transmissions
vehicle borne
vector borne
airborne
modes of transmissions: vehicle borne
animate & inanimate objects, food or liquid
modes of transmissions: vector borne
usually arthropods (invertebrates)
modes of transmissions: airborne
expelled small droplets through things like cough, sneeze, singing (ex covid, chicken pox, TB)
patterns of transmission: unidirectional
nonhuman to human
ex: cat to human (human cannot give it back to the cat)
patterns of transmission: bidirectional
nonhuman to human to nonhuman
Ex: malaria
patterns of transmission: vertical
parent to child
Ex: HIV spread during birth or breastfeeding
patterns of transmission: horizontal
person to person
Ex: cold and flu
patterns of transmission: endogenous
internal source
Ex: something that is already in our body that is asyn until something happens -> E.Coli
patterns of transmission: exogenous
external source
ex: eating contaminated food
prevention
reduce or eliminate exposure or susceptibility to a disease
control
reduce incidence or prevalence of a disease at one point in time
elimination
control of a disease within a specific geographical area
eradication
reduce incidence worldwide to zero
incidence
number of new cases of a disease at a given time period
prevalence
number of all cases of a disease at a given time period
latent period
period between when an infectious agent enters a host, finds conditions favorable and replicates before shedding
incubation period
period between invasion of an agent until symptoms appear
Communicability period
the period of time the person can infect others
Transmissibility
estimates of the basic reproductive number
pandemic
“when a disease growth exponential” -> it does not have to do w/ the virus itself or how severe it is, it is referring to how far it reaches
A pandemic cuts across international boundaries and is unpredictable
epidemic
refers to the occurrence of disease in a community or region more than normal expectancy