0_Apprentice
Hello, do you know what causes common cold?
1_Wizard
I'm pretty sure it's a viral infectious disease of the upper respiratory tract.
0_Apprentice
How long does it take after contracting the virus before it starts showing all it's symptoms? 
1_Wizard
As soon as  two days after exposure to the virus. What areas are are being affected?
0_Apprentice
Yeas please tell me and also when was the disease first identified as a virus?
1_Wizard
The neolithic period about 12,000 years ago.