1Morbidity
incidence of disease in a population
2Mortality
overall deathrate in population
3Case-fatality rate
percentage of population that dies from a specific diease- requires diagnosis
4Chain of Infection
Reservoir of infectious agent- portal of exit- transmission- portal of entry- suceptible host
5Factors that influence the Epidemiology of Diease
Characteristics of the pathogen, portal of entry, dosage of pathogen, incubation period, host predisposing factors
6Examples of Host Predisposing Factors
Physiology (ex-short urethra in women), Genetics (sickle cell gene), Enviroment (climate/weather), Age, Health, Diet, Lifestyle, Chemotherapy
7Propagated epidemic vs. common source epidemic
first inial case then has dramatic increase; from same enviromental source
8Case-cohort study
Determine cause of disease/outbreak
9Cross-sectional Study
Collecting Information on individuals- ex. respiratory infections on students at cofo
10Cohort study
has an Hypothesis. ex, those with a certian bmi and over 70 have higher risk of cardiovascular disease
11Centers for Disease Control and Prevention (CDC)
provides support for labs in US and abroad; collects data on disease that impact public health
12New Infectious Diseases emerge as a result of:
Microbial evolution, complacency, changes in human society, technology, chemotherapy, globalization, climate change