Spanish flu was different in that it hit young and healthy people particularly hard - half of everyone who died were aged between 20 and 40 years, and 99% were younger than 65 years. Like COVID-19, Asian flu killed mostly people older than 65. They calculated that from 1 April to 31 December 2009, the virus had killed between 123,000 and 203,000 people globally. And in 2013 through statistical modelling of mortality data from multiple countries, researchers sharpened the estimate. The US Centers for Disease Control and Prevention (CDC) estimated that it had probably killed 151,700-575,400 people. By the end of the pandemic in 2010, the World Health Organization (WHO) reported around 18,500 confirmed deaths, although with many deaths going unreported the figure was believed to be considerably higher. In contrast, the 2009-2010 swine flu pandemic – also H1N1 like Spanish flu – seemed to be relatively mild as it didn’t require most infected people to be hospitalised. The Asian flu in 1957-1958 killed an estimated 1.1 million people, close to the 1 million people thought to have been killed by the Hong Kong flu pandemic of 1968-1970. In terms of the number of deaths COVID-19 has caused ( 349,095 as of ), it is actually more comparable with previous flu pandemics. The 2003 SARS coronavirus pandemic – had a much smaller impact than this current coronavirus pandemic, and killed fewer than 1,000 people. Most of the pandemics in the 20th and 21st centuries, have either been caused by an influenza virus or a coronavirus.
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