1. It is caused by rhinoviruses.

2. These viruses infect the nasal and respiratory passages, but not the lungs.

3. Its symptoms include : (a) nasal congestion and discharge, (b) sore throat, (c) cough, (d) headache, (e) tiredness and (f) hoarseness.

4. It lasts for 3-7 days.

5. It spreads by (a) inhaling droplets resulting from cough and sneezing by infected person  and (b) by contaminated food, water and objects like pen hanky or cups etc.