Epidemiologist (noun)

A person who studies the patterns and causes of diseases in populations and works to control or prevent the spread of diseases.

Origin:

Late 19th century: from french épidémiologiste, from épidémie "epidemic" + -logist.

Examples:

1. The epidemiologist traced the outbreak of the disease to a contaminated water source.
2. The epidemiologist worked tirelessly to contain the spread of the virus.
3. The epidemiologist was trained in both statistics and biology to help them in their research.
4. The epidemiologist studied the incidence of various diseases in different populations.
5. The epidemiologist was consulted by the government to help control the outbreak of the disease.