A newly emerged infectious disease whose pathogen cause has not yet been identified is lethal in more than 90% of cases. Epidemiological evidence suggests that this pathogen is transmitted only through direct contact with the blood of ill or recently deceased patients. Patient blood and tissue samples would best be handled at BSL- 2 until more information can be learned about the pathogen.

Question

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Given the high lethality rate and the unknown nature of the pathogen, along with transmission through direct contact with blood or tissues of ill or deceased patients, samples should be handled at a minimum of Biosafety Level 3 (BSL-3), if not BSL-4, to ensure maximum containment and protection for laboratory personnel.

A Newly Emerged Infectious Disease Whose Pathogen Cause Has Not