A group of medical nurses are being certified in their response to potential bioterrorism. The nurses learn that if a patient is exposed to the smallpox virus he or she becomes contagious at what time?
A) 6 to 12 hours after exposure
B) When pustules form
C) After a rash appears
D) When the patient becomes febrile
Ans: C
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A patient is contagious after a rash develops, which initially develops on the face, mouth, pharynx, and forearms. The patient exposed to the smallpox virus is not contagious immediately after exposure; only when pustules form, or with a body temperature of 38°C.
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