Kidding aside, I’m not clear on where you got the numbers you posted on the Spanish Flu. Not saying you’re wrong, but do let me know what I’m doing or seeing wrong here:
Research on my end has the following numbers:
Spanish Flu:
Worldwide case rate: 500 million out of 1.5 billion population = 33% case rate
Worldwide survival rate (estimate range): 17 million to 100 million deaths out of 500 million cases = 80-97% survival rate
Worldwide mortality rate (estimate range): 17 million to 100 million deaths out of 1.5 billion population = 1-6% mortality rate
USA case rate: 30 million out of 100 million population = 30% case rate
USA survival rate 850,000 deaths out of 30 million cases = 97% survival rate
USA mortality rate 850,000 deaths out of 100 million population = 0.85% mortality rate
COVID-19 (to date):
Worldwide case rate: 150 million out of 7.5 billion population = 2% case rate
Worldwide survival rate: 3 million deaths out of 150 million cases = 98% survival rate
Worldwide mortality rate: 3 million deaths out of 7.5 billion population = 0.04% mortality rate
USA case rate: 33 million out of 333 million population = 10% case rate
USA survival rate: 600,000 deaths out of 33 million cases = 98% survival rate
USA mortality rate: 600,000 deaths out of 333 million population = 0.2% mortality rate
By all measures, the Spanish Flu was deadlier.
However, both were far deadlier than the seasonal flu:
Worldwide infection rate (yearly average): 1 billion out of 7.5 billion population = 13% case rate
Worldwide survival rate (yearly average): 425,000 deaths out of 1 billion cases = 99.95% survival rate
Worldwide mortality rate (yearly average): 425,000 deaths out out of 7.5 billion population = 0.006% mortality rate
USA case rate (yearly average): 30 million out of 320 million population = 9% case rate
USA survival rate (yearly average): 36,000 deaths out of 30 million cases = 99.9% survival rate
USA mortality rate (yearly average): 36,000 deaths out of 320 million population = 0.01% mortality rate
Spanish Flu Data
COVID-19 Data
Worldwide Seasonal Flu Data
USA Seasonal Flu Data