Question

When a disease infects a large fraction of the population in every region of the world it is called a(n):epidemic.pandemic.endemic.infection.

Answer 1

An epidemic is when a disease is active in a specific geographic area at a specific time.

A pandemic occurs when a disease or epidemic has spread to other countries or even the entire world.

Although they are similar concepts, the epidemic is limited to a geographic area and can escalate into a pandemic, therefore, the answer is pandemic.