character: Viral Transmission
topic: Methods of Virus Transmission
grade: 9
subject: Biology
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character: Direct Contact
topic: Direct Transmission Methods
grade: 9
subject: Biology
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character: Airborne Transmission
topic: Virus Spread in Air
grade: 9
subject: Biology
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character: Vector-Borne Transmission
topic: Role of Vectors in Virus Spread
grade: 9
subject: Biology
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