A pandemic is considered the highest level of disease according to the CDC. An epidemic is a sudden increase in infected numbers within a population. An epidemic spreads widely affecting many countries or continents, while an endemic refers to the usual prevalence of a disease within a geographic area. Epidemiology is defined as the study of disease incidence, distribution, and control.

1. Common epidemics in the world.
Complete every statement by using the information from the text.
1. A pandemic is considered to be the _______________possible level of
disease according to CDC.
2. ________________characterized by infrequent and irregular
occurrence of a disease.
3. ________________ an epidemic that spreads in and affects many
countries or continents.
4. ________________ is defined as a branch of medicine that studies the
incidence, distribution, and control of diseases.
5. ________________a sudden increase o infected number withing a
population.
6. ________________ usual prevalence of a disease in a given geographic
area.