Bird Flu Uncovered: The Silent Threat Lurking in Our Backyards and How You Can Outsmart It Today
H1N1 vs. H5N1
The 1918 pandemic virus was H1N1. The annual flu strain remained H1N1, infecting relatively few people every year for decades until 1957, when an H2N2 virus suddenly appeared as the “Asian flu” pandemic. Because the world’s population had essentially only acquired immunity to H1 spikes, the virus raced around the globe, infecting a significant portion of the world’s population. For example, half of U.S. schoolchildren fell ill. H2N2 held seasonal sway for 11 years. In 1968, the H3N2 “Hong Kong Flu” virus triggered another pandemic and has been with us every year since.
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