Question
Short note: Common cold
→Pathogen: Rhino virus and some other viruses.
→Spread through:
→Droplets resulting from cough and sneeze of an infected person are either inhalated director transmitted through pen, book, glass, door handle, computer keyboard or mouse etc.
→Rhino virus infects the nose and respiratory tract, but does not infect the lungs.
Symptoms:
→Nasal congestion and discharge, dry throat, runny nose, cough, headache, fatigue etc.
→These symptoms are observed for three to seven days.
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| S.No. | Type of barrier | Example of the barrier | Function |
| (і) | А | B | Prevent microbial growth |
| (ii) | C | Polymorpho nuclear leucocytes | D |
| (iii) | Cytokine | E | F |