Common cold differs from pneumonia in that
1. pneumonia is a communicable disease, whereas the common cold is a nutritional
deficiency disease
2. pneumonia can be prevented by a live attenuated bacterial vaccine, whereas the
common cold has no effective vaccine
3. pneumonia is caused by a virus, while the common cold is caused by the bacterium
Haemophilus influenzae
4. pneumonia pathogen infects alveoli whereas the common cold affects nose and
respiratory passage but not the lungs