
A disease of pandemic proportions.
The flu has been a mainstay of the winter season since it first appeared to infect humans in the 1900s, so much so that we no longer pay much attention to it and have developed ways to prevent, diagnose and treat it without breaking a sweat. But this wasn’t always the case. When the flu virus first began to infect humans, nobody had immunity, nor were there means to mitigate its devastating effects. Nobody invented vaccines yet. Doctors didn’t have antivirals. There was barely any knowledge about how and why the virus was particularly deadly. This combination of factors allowed Influenza A to turn into one of the deadliest pandemics in human history.
The first flu pandemic that occurred in 1918 was one of the most devastating, sweeping across the globe with little to no resistance, infecting over 500 million people and then eventually killing an estimated 20 to 50 million of the world population, almost a million of whom were from the United States. The number of deaths alone shows how deadly this pandemic was, but more so to particular groups of people. Most of the deaths occurred among children younger than five, 20-40-year-olds, as well as older adults over the age of 65. Similar to how the novel coronavirus-causing Covid-19 swept through a vulnerable, unvaccinated population at the beginning of 2020, the 1918 flu caught everyone defenseless. Only non-pharmaceutical interventions such as quarantine, isolation, personal hygiene, and disinfectants were at their disposal to thwart the spread of the virus.