EPIDEMIOLOGY Flashcards
is the branch of medicine which deals with the incidence, distribution,
and possible control of diseases and other factors relating to health.
EPIDEMIOLOGY
is also used to search for determinants, which refers to the causes and
other factors that influence the occurrence of disease and other health-related events. Determinants can be demographic characteristics, genetic makeup, risk factors, environmental exposure.
EPIDEMIOLOGY
is usually present in a community and this
may not necessarily be the desired level.
ENDEMIC DISEASE
example of these are malaria and dengue
ENDEMIC DISEASE
disease occurring infrequently and
irregularly.
SPORADIC
e.g. leptospirosis and typhoid fever
SPORADIC
refers to an increase, often sudden, in the number of cases of a disease above what is normally expected in that population in that area.
EPIDEMIC
e.g. influenza
EPIDEMIC
carries the same definition of epidemic, but is often used for a more limited
geographic area.
OUTBREAK
refers to an epidemic that has spread over
several countries or continents, usually affecting a large number of people
PANDEMIC
e.g. COVID-19, SARS, MERS-COv
PANDEMIC
is one that develops rapidly but lasts
only a short time (e.g. influenza).
ACUTE DISEASE
develops more slowly, and the body’s
reactions may be less severe, but the disease is likely to continue or recur for long periods (e.g. hepatitis B).
CHRONIC DISEASE
the interval between the initial infection and the first appearance of any signs or symptoms. The time of incubation depends on the specific microorganism involved, its virulence (degree of pathogenicity), the number of infecting microorganisms, and the resistance of the host.
INCUBATION PERIOD
characterized by early, mild symptoms of disease, such as general aches and malaise. This is short period that follows the period of incubation in some diseases.
PRODROMAL PERIOD
the period where disease is most severe. The person exhibits overt signs and symptoms of the disease contracted. If the patient’s immune system cannot overcome the pathogen present, the patient dies.
PERIOD OF ILLNESS
also known as the period of defervescence.
PERIOD OF DECLINE
This is period where signs and symptoms begin to subside but the patient may be vulnerable to secondary infections.
PERIOD OF DECLINE
this period marks the patient’s recovery from the disease. The patient regains strength and body returns to its normal condition.
PERIOD OF CONVALESCENCE
subjective changes that are not apparent to an observer.
SYMPTOPMS
objective changes the physician can observe and measure
SIGNS
specific group of symptoms or signs
SYNDROME
spreads from one host to another.
COMMUNICABLE DISEASE
e.g. Chickenpox, measles, genital herpes, typhoid fever, and tuberculosis
COMMUNICABLE DISEASE