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COVID-19 infection fatality rate is about 1.15%,

COVID-19 infection fatality rate is about 1.15%,

 


October 30, 2020-A New research According to researchers at Imperial College London, the case fatality rate from COVID-19 infection is about 1.15% of infected people in high-income countries and 0.23% in low-income countries.

Case fatality rate (IFR) represents the mortality rate of all infected individuals. This is “an important statistic for estimating the burden of COVID-19 and has been continuously discussed throughout the current pandemic,” said Imperial College London. In a news release..

According to a news release, researchers screened 175 studies and identified 10 antibody studies to obtain estimates of case fatality rate.

In a new study, coronavirus is fatal to the elderly, doubling the risk of death every 8 years, ranging from 0.1% for people under 40 and 5% for people over 80. Has been confirmed to be. The disparity between high-income and low-income countries is largely due to the fact that the population of high-income countries tends to have a large number of older people, while the population of low-income countries tends to distort the youth. is.

“Elderly people are at a much higher risk of death from COVID-19, but middle-aged people are still at higher risk,” said co-author Dr. Lucy O’Kell. “”For example, it is estimated that about 1 in 260 people between the ages of 50 and 55 will die. The case fatality rate of COVID-19 was calculated primarily based on the first wave of epidemics in many countries. We hope that new clinical knowledge and treatment will reduce the lethality somewhat, but it is still a dangerous virus. “

Other recent studies have shown that COVID antibodies tend to decline over time, but the Imperial College London study did not take that into account, the news release said. Overestimate IFR in the future. “

“We know that antibody testing is not complete and there may be quite a few people who do not show a detectable antibody response to SARS-CoV-2,” said study co-author Robert. Dr. Verity said.

“”However, even with this uncertainty taken into account, the case fatality rate of COVID-19 is high, around 1% in typical high-income countries. This risk is concentrated in the elderly, and the probability of dying from COVID-19 doubles approximately every eight years.

High-income countries have high case fatality rates, mainly due to their long life expectancy. High-income countries tend to have a large elderly population, while low-income countries tend to be young and distorted, and old age is a major contributor to COVID deaths.

This study does not compare coronavirus deadlines with seasonal influenza.The· World Health Organization The mortality rate of seasonal influenza is estimated to be about 0.1%. This is about one-tenth the case fatality rate found by scientists at Imperial College London for the coronavirus in high-income countries.

The WHO warned that access to and quality of health care are also key factors in influenza mortality.

Source

Imperial College in London. “Report 34-Estimates of COVID-19 infection mortality from serum prevalence.” “COVID-19 mortality: A new report states that infection mortality is about 1%.”

World Health Organization. “Coronavirus disease (COVID-19): Similarities and differences with influenza.”


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