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Scientists estimate that 80 percent. of new SARS-CoV-2 coronavirus infections corresponds to 20 percent. infected who are so-called super bearers. New research reveals more facts about them.
- Scientists have observed that people under 60 are infected with the coronavirus SARS-COV-2 almost three times more effectively than people over 60
- The research of scientists shows that two percent. of those infected account for a fifth of the cases of infection in surveyed Georgia counties
- You can find more about the coronavirus on the TvoiLokony home page
They most effectively infect people under 60 years of age
Experts at Emory University analyzed, in a study published in the journal PNAS, nearly 10 cases of SARS-CoV-000 coronavirus infection reported between March and early May, in five US Georgia counties.
The analysis showed that one fifth of all infections studied accounted for just two percent. infected patients. In light of this information, the researchers emphasize the importance of maintaining social distancing measures that can limit close contacts with others.
The researchers also determined that people under 60 years of age infect almost three times more effectively than people over 60 years of age. This means that more super cancers are seen among younger people, who are more likely to have mild infection (age is one of the risk factors for severe COVID-19 symptoms).
Super Carriers pose a serious threat
The data used in the study comes from the Georgia Department of Public Health and covers the five state counties with the most cases of infection. These are Cobb, DeKalb, Gwinnett, Fulton and Dougherty counties. The analysis showed that the viral reproduction rate (R-factor) in these counties, prior to taking measures to limit coronavirus transmission, was 3,3. At Dougherty, the R-factor was as high as 5,2.
The R-factor is used by scientists to describe how infectious a disease is and how quickly it spreads. Shows the average number of people who can become infected from one person. The higher the R-factor, the more people can become infected.
Super bearishness is when some people infect a disproportionate number of other people in relation to the average degree of contagion.
To describe how the Georgia counties were infected, scientists used the so-called the k-factor, which differs from the R-factor and directly relates to the superlasticity. The k-factor helps indicate how many cases of coronavirus infections are caused by events involving supercarriers by measuring variability in the spread of the disease.
If the k-factor is close to 1, then, as in the case of e.g. influenza, the virus will spread relatively evenly in the population. The lower the value of the k-factor, the higher the degree of “super bearhood”. For example: in Dougherty County, the k-factor was estimated at 0,27, indicating that superbugs played a major role in the outbreak in that area. The spread of the epidemic in Dougherty was related to the funeral, which presumably attended the Super Bearer. Soon after, several dozen new SARS-CoV-2 infections appeared.
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The scientists write in the article that the conducted analyzes deepen the knowledge about the heterogeneity at the individual level in the transmission of SARS-CoV-2, which is of key importance for making decisions on implementing restrictions related to the spread of the coronavirus.
Read more about Super Carriers and their impact on the development of the epidemic:
- Who are the “super explorers”?
- What influences the transmission of the virus? A sick person who is in the wrong place at the wrong time
- Children, although less likely to have COVID-19 symptoms, transmit as much virus as seriously ill adults
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