Many states initially quarantined Ebola care workers when they returned to the U.S. 

Which of the following studies meets the definition of human subjects research?

Poor people are more often affected by infectious diseases globally. 

Past research abuses have increased the interest in research ethics.

Prevention is more effective and less costly than treatment.

Informed consent relies on the responsibility of the provider to disclose fully any relevant information to the patient to help them evaluate their options.

Human fertilized eggs can survive for 3 months in vitro

A patient has the right to be discharged, even against medical advice.

A major stumbling block in stem cell research is supply.

Alice notices an unusual number of cases of dengue fever in her Florida infectious diseases practice.  She notifies the CDC in order to determine if this is an outbreak. Which of these would be the most critical information needed to make that assessment?