Question

What do epidemiologists study?

blood and heart diseases
how often a disease occurs in a particular area or group of people
risk factors for different diseases
Non-infectious diseases and their causes

Answer 1

B) How often a disease occurs in a particular area or group of people

Step-by-step explanation:

Epidemiologists study diseases in many different situations. Their main goal is to prevent diseases by using this information to plan and evaluate strategies.

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~Silver