This new swine flu is a tripple combination of swine, avian and human flus.
The common flu is a human flu and that is what we have vaccines for. The tripple combination is new, we do not have a vaccine and very likely we will not have a vaccine for this one even in the six month period which applies to the manufacture of the human flu vaccine. Again I am no authority by any means but I have heard that this flu is more difficult and therefore raises more alarms than an the "seasonal" human flu. It is a version of the H1N1 from back in 1918 that killed tens of millions.
What I tried to state in the earlier posts, but failed miserably, is that a human flu vaccine while not very helpful should help against the human part of the new swine flu. That is probably why some people may be slightly immune thus not having as severe or fatal symptoms.
This discussion is a distraction but remember that our mine is in Mexico and while this flu is mainly centered on Mexico city and immediate surroundings, it could expand and affect operations of our company. So we should be aware of goings on beyond the possible transport to your country and location.