An administrator notices multiple residents on the same hall developing similar gastrointestinal symptoms within 48 hours. What is the FIRST action the administrator should take?
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A
Immediately close the facility to new admissions and notify the media
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B
Notify the infection preventionist and begin outbreak investigation and symptom surveillance
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C
Administer prophylactic antibiotics to all residents on the affected hall
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D
Transfer symptomatic residents to the hospital to prevent further spread