Chat with AIExam 20: Communicable and Infectious Diseases
What steps are necessary for a field investigation of an acute outbreak?
(37) 
Verified-Confirm the existence of an epidemic
-Confirm the diagnosis
-Establish a case definition and characterize the cases
-Formulate and test a hypothesis about the outbreak source
-Contain the outbreak
-Prepare and disseminate a report about the outbreak
Biologic agents felt to be of highest threat to national security are designated as Category A, B, or C agents, depending on an agent's ability to be spread easily; the severity of illness an agent causes, particularly if fatal; an agent's ability to cause social disruption; and any special preparedness needs for a particular agent. Describe each agent category.
(33) Verified-Category A agents: highest priority category and include anthrax, botulism, tularemia, plague, smallpox, and viral hemorrhagic fevers such as Ebola or Lassa viruses.
-Category B agents: include ricin toxin, Q fever, and agents that may threaten the water supply, such as Cryptosporidium parvum, among other agents.
-Category C agent: emerging agents that may have the potential to be weaponized in the future, such as hantavirus.
In the United States, tuberculosis (TB) was one of the leading causes of death at the beginning of the twentieth century, but reported mortality from TB declined steadily during the first half of the century. Discuss what factors caused this decline.
(36) VerifiedThe factors that caused a decline in mortality from TB in the first half of the twentieth century were:
-Improvements in housing that reduced crowding
-Development of effective antibiotics
-Creation of TB control programs
-Improvements in hygiene and sanitation that reduced the rates of many communicable diseases
From a public health perspective, what factors complicate tuberculosis (TB) control?
(29) Infectious disease transmission can broadly be categorized into what four direct and indirect modes?
(31) 
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