[Source: Peter Busch, KPHO.com] – Arizona scientists in Flagstaff are tracking the H1N1 flu to see whether it mutates into substrains and unleashes a second, more powerful wave of illness.
In the spring of 1918, no one worried too much about the so called “Spanish Flu” because it acted just like the normal flu.
But later that year a mutated strain started sweeping the globe, killing nearly 100 million people.
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