HUMAN MICROORGANISM INTERACTION Flashcards
evidence of disease that is experienced or perceived; changes in the body function noted by patient but not apparent to an observer
Symptoms (Subjective)
evidence of a disease the physician can observe and measure
Sign (Objective)
a specific group of signs and symptoms that accompany a particular disease.
Syndrome
number of people in a population who develop a disease during a particular time period.
Incidence
number of people in a population who develop a disease regardless of when it first appeared (both old and new cases)
Prevalence
impairment in the performance of vital function
Disease
A disease that is caused by the GROWTH of pathogen
Infectious disease
Name 5 causes of disease
- Infectious disease
- Malfunction of an organe.g. hyperthyroidism
- Vitamin deficiency - e.g. scurvy
- caused by allergic response-e.g. asthma
- caused by uncontrolled cell growth-e.g. cancer
Classification of infectious diseases
- Based on behavior within the host;
- Based on occurrence of disease
- Based on severity or duration of disease
- Based on extent of affected host’s body;
- Based on state of host’s resistance
2 Classification of infectious diseases based on the behavior within the host
- Communicable disease
2. Non-communicable disease
Direct or indirect transmission of disease from one host to another
Communicable disease
A communicable disease that is easily transmitted from one person to another e.g. droplet infection in common cold and influenza
Contagious disease
Classification of infectious diseases that do not spread from one host/ person to another
Non-communicable disease
4 Classification of infectious diseases based on occurrence of disease
- Sporadic disease
- Endemic disease
- Epidemic disease
- Pandemic disease
Diseases that occur only occasionally
Sporadic disease
These diseases are controlled as a result of immunization and sanitation procedures (nonendemic) e.g. botulism, tetanus, diphtheria
Sporadic disease
A disease that is constantly present in a population or community usually involving only few people.
Endemic disease
A disease that is greater than the normal number of cases in an area within a short period of time
Epidemic disease
A worldwide epidemic of a specific disease e.g. AIDS, influenza
Pandemic disease
4 Classification of infectious diseases based on severity or duration of disease
- Acute disease
- Chronic disease
- Subacute disease
- Latent disease
A disease that develops rapidly (rapid onset) but lasts only a short time e.g. measles
Acute disease
A disease that develops more slowly (insidious onset); disease is likely to be continual or recurrent for long periods e.g. TB, leprosy
Chronic disease
A disease that is an intermediate between acute and chronic e.g. bacterial endocarditis
Subacute disease
A disease where that causative agent remains inactive for a time but then becomes active to produce symptoms of the disease. e.g. shingles
Latent disease
3 Classification of infectious diseases based on extent of affected host’s body
- Local infection
- Generalized (Systemic) infection
- Focal infection