Why are some people better able to fight off the flu than others? Part of the answer, according to a new study, is related to the first flu strain we encounter in childhood.
Scientists from UCLA and the University of Arizona have found that people’s ability to fight off the flu virus is determined not only by the subtypes of flu they have had throughout their lives, but also by the sequence in which they are been infected by the viruses. Their study is published in the open-access journal PLoS Pathogens.
Isn't that interesting? I would imagine its a similar thing to something we have known for ages, that is....in their early years young children pick up all sorts of colds and infections, but it helps to build up their immune system.
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Just like busses...! 
Have we all gone back to the playground 
sudden Bronchiectasis exacerbation.
Why don't people want to quit smoking?
