Chapter 14

Question 1

Incidence

Answer 1

Number of new cases per specified period

Question 2

John Snow

Answer 2

First epidemiology study for incidence of cholera in 1854

Question 3

Florence nightingale

Answer 3

Improved hygiene reduced typhus. Transmitted via body lice.

Question 4

Sudden increase in the number of cases of a specific disease

Answer 4

Epidemic

Question 5

Common source epidemic

Answer 5

When multiple individuals become infected from the same original source.

Question 6

Ecoli

Answer 6

Bloody diarrhea. Usually contracted via food. Water borne. Pathogen in some strains of ecoli (shigella enteritis) was acquired through transduction. Incubation period 3-4 days