Swine Flu pandemic in winter 2009?

The biggest fear that some in the medical community are expressing comes from the natural flow of flu through out the world. The fear is that come winter; the swine flu virus would have evolved into a stronger more dangerous virus.


Understanding the fear of Swine flu evolution
A scenario painted by some experts of the possible mutation of this swine flu is scary. Here is the scenario painted by some experts.

Birth:
1) Swine flu starts in Mexico, it migrates from Swine to humans. Efforts by Mexican authorities to contain it is successful. A mass infection is avoided.

2) Swine flu travels toward the northern hemisphere. Flu has not evolved strong enough to cause a wide spread pandemic.


Transformation:
3) Swine flu cycles toward the northern hemisphere. As the north's temperature rises during the spring and summer months, the virus slowly travels back toward the now colder southern hemisphere.

4) Swine flu mutates yet again in the southern hemisphere. As temperature rise in the south, and lower in the north, swine flu moves again toward the northern hemisphere. It's now September and the flu beings is journey... now mutated and stronger. This virus could potentially be a real killer.


Can this really happen?
The scenario above is similar to the one taken by this virus's earlier and deadlier cousin; The 1918 flu pandemic. The 1918 Swine flu pandemic was associated with H1N1, and by expert opinion, may reflect a TRANSFORMATION either from swine to humans or from humans to swine. Evidence available from that time suggests that the 1918 outbreak in humans followed a TRANSFORMATION/MUTATION event.