utenzi

I wasn't able to take any time off from work this summer and with autumn only a few days away it's good to step back and see if anything else was busy all summer long. Lo and behold, the nasty ole flu virus was equally as industrious. You see, influenza is active all year round in the tropics but here in the temperate regions the flu is seasonal, coming on strong every winter then disappearing in the late spring. There's a story on the Penn State website that relates to this dilemma, titled Flu virus trots globe during off season . Catchy title, huh? Here's an excerpt from that article: Flu infections in the Northern Hemisphere typically follow a familiar pattern. Some time before the start of the winter infection season, the virus evolves, changing enough to evade the previously primed immune system. Then, just before summer, the virus disappears, only to resurface the next fall with a completely different genetic makeup, ready to fool the immune system anew. But litt...