Quote:
Originally Posted by kanjar
@desiibond
Tell me why do we catch cold every once in a while ?
Its because the strain changes and we do not have any immunity to new strain. So even if a person has got Swine Flu before, there is every chance of him/her getting Swine Flu from another strain.
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desiibond is right kanjar.
the reason we get cold and that of Swine Flu are different. We get cold not because we haven't developed the resistance it's because these viruses are in our nose and in time of season change blood in our nose decreases and goes to other parts like brain etc. to maintain temprature and hence these viruses gets a chance to attack and there are hunderds of virus causing cold not only one. But in case of Swine flu it's only H1N1 virus not thousands.