1. Epidemic (n.) 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.
5. Pandemic (n.) refers to an epidemic that has spread over several countries or continents, usually affecting a large number of people.
The use of outbreak and epidemic overlap in some instances!Don’t forget our class on health (U18): https://ericvocab.teachable.com/courses/ericvocab_full/lectures/12016185