It resulted in a very high death rate.
Step-by-step explanation:
The disease affected 200 to 700 million people and killed around 21 million people. The death toll was high compared to that of war.
It extended for 36 months. The mortality rate of young adults was high. among 20 to 40-year-olds.
There was no vaccine to protect against influenza infection and no antibiotics to treat secondary bacterial infections associated with influenza infections.
control efforts like isolation, quarantine, personal hygiene, use of disinfectants, and limitations of public gathering were also uneven.