People Who Don't Know They Are Infected Lead The Way In Spreading COVID-19

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People Who Don't Know They Are Infected Lead The Way In Spreading COVID-19
People Who Don't Know They Are Infected Lead The Way In Spreading COVID-19

Video: People Who Don't Know They Are Infected Lead The Way In Spreading COVID-19

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Video: How Contagious is COVID-19? (Transmission, Spread, and R0) 2023, February
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People who don't know they are infected lead the way in spreading COVID-19

The leading role in the spread of COVID-19 is played by infected people who are unaware of their disease. Mass diagnostics and quarantine measures are helping to reduce the number of undiagnosed cases and slow the spread of infection.

People who don't know they are infected lead the way in spreading COVID-19
People who don't know they are infected lead the way in spreading COVID-19

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The leading role in the spread of COVID-19 is played by infected people who are unaware of their disease. Mass diagnostics and quarantine measures are helping to reduce the number of undiagnosed cases and slow the spread of infection. This is revealed by a new study published in the journal Science.

An international team of scientists used computer models to simulate the spread of COVID-19 infection in China in January 2020. For modeling, data on cases registered from January 10 to 23 in 375 Chinese cities were used.

According to the data received, the spread of the coronavirus in China could not be explained by only known cases of the disease. Modeling indicates that 86% of infections remained undiagnosed at the time.

“The skyrocketing numbers of COVID-19 cases have been associated with people with undiagnosed mild or asymptomatic forms of the disease,” said Jeffrey Shaman of Columbia University, co-author of the study.

Scientists have found confirmation that there were a lot of infected people with mild symptoms who were not diagnosed, and they really spread the disease effectively. They stressed that this "invisible" transmission will continue to be the biggest challenge in the fight against infection in the future.

People with mild symptoms who were not diagnosed were about half as infectious as those with confirmed COVID-19, according to new data. At the same time, it was unregistered infected people who became the source of 79% of diagnosed cases of the disease.

The sharp decline in the incidence of COVID-19 in China, scientists say, was associated with a decrease in the number of unaccounted for sick people and strict quarantine measures. The study authors write that this highlights the need for massive screening for infection.

“Increased awareness of infection, increased use of personal protective equipment and travel restrictions have helped reduce the overall severity of the infection. But it is unclear if this success will be enough to stop the infection,”Sheimen said.

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