Three coronavirus incidents have occurred this century. One was SARS in 2003, one was MERS in 2015, and another was COVID-19 this year. Let’s first compare the mortality and impact data.
SARS-CoV: A 2003 press release issued by the World Health Organization states that the outbreak of SARS in Asia caused more than 8,000 people to be infected, with a mortality rate of about 10%.
MERS-CoV: As of December 2019, 2468 cases of MERS infection have been confirmed, and 851 deaths have occurred. The mortality rate is about 34.5%.
COVID-19: Zhong Nanshan said that the average transmission coefficient of the new crown virus is close to 3, which is very high, and it is contagious without symptoms, which is not easy to prevent.
The World Health Organization’s “Joint Mission with China” Report published on February 28, 2020 shows that as of February 20, the rough estimate of the fatality rate is about 3.8%.
From the above reports and data, it can be seen that although the mortality rate of the new coronavirus is lower, its infection and transmission ability is stronger.
The facts also prove this point: WHO announced on March 11 that the new coronavirus entered a global pandemic. Although SRAS and MERS have high mortality rates, they have not caused a large-scale global impact, and the economic losses caused by SRAS and MERS are far less than those caused by the new coronavirus.