Chapter 15

Question 1

Slow and progressive genetic changes that take place in DNA and RNA as organisms replicate in multiple hosts.

Answer 1

Antigenic drift

Question 2

Sudden change in the molecular structure of DNA and RNA in microorganisms, resulting in a new strain of the microorganism.

Answer 2

Antigenic shift

Question 3

Model illustrating the interaction of 13 factors that contribute to the emergence of infectious diseases.

Answer 3

Convergence model

Question 4

Observation of clients to ensure that they ingest each dose of anti-TB medication to maximize the likelihood of completion of therapy.

Answer 4

Directly observed therapy

Question 5

Natural unit consisting of all living things (plant, animals, bacteria, viruses) interacting with and dependent on, one another for survival within their nonliving environment

Answer 5

Ecosystem

Question 6

Newly identified clinically distinct infectious disease, or the reappearance of a known infectious disease after its decline, with an incidence that i increasing in a certain geographic area or among a specific population

Answer 6

Emerging infectious disease

Question 7

Type of immunity in which a large population of people in a population are not susceptible to a communicable disease and the few ppl who are susceptible will not likely be exposed or contract the illness

Answer 7

Herd immunity

Question 8

Process by which organisms adjust and change to their environment

Answer 8

Microbial adaptation

Question 9

Epidemic occurring worldwide.

Answer 9

Pandemic