A huge difference--Spanish flu killed around 50 million people while the death toll during Covid-19 is less than 1 million so far.
rapid flow of information, better health services, and people being more conscious.
There is no big difference despite the scientific progress over the past 100 years.
Please see this link
https://www.vox.com/2020/3/9/21164957/covid-19-spanish-flu-mortality-rate-death-rate
- The atmosphere in which the First World War effect continues,
- Insufficient medical facilities, medicine, diagnosis, etc.
- Transportation and communication problems,
- Number of physicians and health personnel
........
As a result of all these, 50 million deaths recorded .............
Covid adopted "airplane speed-air transmission dynamics":
pandemics happened in the last century followed natural environment-host agent transmission dynamics, like each of the factors play their positive and negative roles in disease transmission.
Especially, environment had a greater role in pandemic diseases, as it limits geographical transmission. but in the recent COVID, the negative part of the environment, in limiting the transmission of diseases in distant geographical area were not seen. Major affected area been receiving infection and developing high epidemic level in sources by air plane delivery.
Thus, the rate of development of pandemic was attained in shortest time that other pandemics and the community in the 21st century seems much aware on how to prevent and control diseases, but it is not the actual case.
https://www.theatlantic.com/magazine/archive/2020/09/coronavirus-american-failure/614191/
The difference between epidemics between the years 1920 and 2020 is the speed of countries ’response to confronting diseases, as well as the type of disease, the speed of spread among the population, the number of injuries and deaths.
https://www.smithsonianmag.com/science-nature/compare-flu-pandemic-1918-and-covid-19-caution-180975040/
https://www.gavi.org/vaccineswork/how-does-covid-19-compare-past-pandemics
https://www.washingtonpost.com/graphics/2020/local/retropolis/coronavirus-deadliest-pandemics/
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