Answer to Question 1
ANS: A, C, E
The epidemiological triangle consists of the agent, the environment, and the host. Communicable period is the time during which the child can transmit the disease to others. Virulence refers to the severity of the health problems caused by the agent.
Answer to Question 2
ANS: A, B, C, D
There are several core strategies to prevent the spread of MRSA, including assessing hand-hygiene practices, implementing contact precautions, rapid reporting of MRSA laboratory results, recognizing previously colonized patients, and educating health-care providers. Screening all patients is not one of the core strategies.