The thing is, guys, we never know if this year’s flu strain will be another Spanish Flu. The mutations are random, so the one that brought about the influenza that killed 20-50 million (some estimates range towards 100 million) could be repeated. I refer you to The Great Influenza by John M. Barry, a book that will scare you half to death.
The reason the pandemic killed so many young people was because their immune systems went into overdrive in response to the influenza and subsequent pneumonia infections. Their lungs filled with lymphatic fluid, cellular debris, and white blood cells, stretching out and hardening the alvaeoli and making it impossible to get oxygen. A doctor called into one of the first influenza wards said he couldn’t tell if his patients were white men or black, as they had turned a uniform blueish-purple color from oxygen deprivation. The condition is referred to as Acute Respiratory Distress Syndrom, and even with today’s ICUs, medical knowledge, and expertise, 80% of those who come down with ARDS die.
Couple that with the fact that there are so many easy breeding places for influenza. Anytime you have people living in close quarters with pigs or fowl, you have an efficient viral laboratory. Even worse, we’ve learned that two different strains can infect a host at the same time, and recombine their genes, making mutations much more quickly and effectively. Worst of all, we used to think that new strains were hampered by transmission from pig/bird sources to human sources and had to mutate again before they could be easily transmittable person to person. That’s no longer the case. Epidemiologists have discovered strains that emerge from zoonotic sources already capable of quick and easy person to person transmission. With that barrier gone, an epidemic could emerge in a matter of days, instead of weeks.
Granted, most of the populations that still live with pigs, chickens, ducks, or other carriers are in Asia, but if you think that protects you, you’ve forgotten about our international airlines. Remember SARS? SARS is baby stuff compared to a real flu epidemic. Our society is designed around the notion of easy travel, and a virulent strain that causes ARDS in the young and healthy could spread like wildfire.
During the Spanish Flu epidemic, towns that were hit pretty much shut down for the duration. Hospitals refused to take new patients. Doctors and nurses, in some instances, were kidnapped by families desperate for someone to treat their loved ones. In some cases, civil order very nearly broke down.
So, you know, show some respect for the flu virus. There’s a reason Stephen King choose it to wipe out humanity in The Stand