Viral disease:
- Viral diseases are infections caused by viruses, which are a type of bacterium.
- Some examples are flu, common cold, HIV, herpes, etc.
- The common cold, which is caused by a viral infection of the upper respiratory tract, is the most prevalent type of viral sickness (nose and throat).
- Measles, Chickenpox, AIDS, and Mumps are some examples of viral diseases.
Final answer: Common cold is a viral disease.