Jun 15, 2020 19:00:00

Research results that 40-45% of people infected with the new coronavirus may be asymptomatic

The new coronavirus infection (COVID-19) has caused a great deal of damage to the world, and at the time of writing

, more than 7.8 million people were infected worldwide and the death toll exceeded 430,000. .. It is known that COVID-19 has a wide range of symptoms depending on the person, and that clear symptoms do not always appear even if infected with the new coronavirus (SARS-CoV-2). A paper published by the Scripps Institute in the United States showed that '40-45% of people infected with SARS-CoV-2 are asymptomatic.'

Prevalence of Asymptomatic SARS-CoV-2 Infection: A Narrative Review: Annals of Internal Medicine: Vol 0, No 0
https://www.acpjournals.org/doi/10.7326/M20-3012

Up to 45 percent of SARS-CoV-2 infections may be asymptomatic
https://medicalxpress.com/news/2020-06-percent-sars-cov-infections-asymptomatic.html

It has been pointed out early that some people infected with SARS-CoV-2 have asymptomatic infections that can transmit the infection without clear symptoms, and as of March 2020, `

`COVID-19 became aware. It has been spread by asymptomatic infected people .'

Meanwhile, in April 2020, large-scale tests were conducted at the US nuclear aircraft carrier Theodore Roosevelt and a prison in Ohio, which became a cluster of COVID-19, and 'most of the infected people are asymptomatic'. It was also reported that it was.

Of the 3,300 inmates who tested positive for the new coronavirus, 96% were asymptomatic-GIGAZINE

Eric Topol , a professor of molecular medicine at the Scripps Institute, worked with applied behaviorist Daniel Oran to collect data from 16 diverse cohort studies worldwide.

The cases used to collect the data include the Randomized Randomized Study conducted in Iceland, plus Theodore Roosevelt and the prisons of Ohio, cities in northern Italy, the cruise ship Diamond Princess , Boston and Los Angeles. Of homeless shelters, Japanese returning from Wuhan, Greeks returning from Spain, Turkey and the United Kingdom, students at Rutgers University and employees at related hospitals. That.

An analysis of the proportion of people infected with SARS-CoV-2 who developed COVID-19 and remained asymptomatic showed that 40-45% of those infected were asymptomatic The research team argues that this has been shown. 'What was common to almost all of them was that the majority of infected people were asymptomatic,' Oran said.

In addition, the research team confirmed that from a case of Italy or Theodore Roosevelt, a person who was asymptomatically infected with SARS-CoV-2 infected another person with SARS-CoV-2. The research team suggests that asymptomatic infected people may infect others with SARS-CoV-2 for more than 14 days, but to investigate actual infectivity etc., asymptomatic infected people are included It seems that more extensive research is needed.

Asymptomatic infected people are not asymptomatic, but they are not totally harmless. As a result of a CT scan performed on asymptomatic Diamond Princess infected persons, 54% of asymptomatic persons have lung abnormalities, so that even asymptomatic patients may be adversely affected. Has been suggested.

“The quiet spread of the virus makes control more and more difficult,” Topol says. “Our review emphasizes the importance of testing. It needs to be inspected, or the virus will continue to escape us.' Mr. Oran also said that asymptomatic infected people may spread the infection, and even if there are no symptoms, wearing a mask can prevent unknowingly spreading the infection and protect others .