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Please select a human disease caused by a virus and address the following: 

• What are some of the signs and symptoms of your chosen viral disease? 

• What is the causative agent for this disease? 

• What type of cells does the virus attach to? 

• What is the mode of transmission for the virus? Include a description of the reservoir for the virus, if any. Additionally, you should include the specific portal of entry/exit for the virus. 

• Is there a treatment or vaccine for the virus? 

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