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More than one-third of children with COVID-19 show no symptoms

 


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According to a University of Alberta study, more than one-third of children infected with COVID-19 are asymptomatic, and young people diagnosed with the disease may be just a small part of infected children. There is.

“The concern from a public health perspective is that there is probably a lot of COVID-19 circulating in communities that people aren’t even aware of,” said Finlay McAllister, a medical professor at the School of Medicine and Dentistry.

“Looking at 1,200 new case reports per day in Alberta, it’s probably just the tip of the iceberg. Many people don’t know they’re sick and are potentially spreading it. Let’s do it, “he said.

In this study, McAllister’s team analyzed 2,463 results. Persons tested for COVID-19 infection during the first wave of the pandemic (March-September).

Overall, 1,987 children tested positive for COVID-19 and 476 tested negative. Of the children who tested positive, 714 (35.9 percent) reported asymptomatic.

“It speaks to the school’s safety program,” he said. “We can answer all the COVID-19 questionnaires we need, but if one-third of our children are asymptomatic, the answer to all the questions will be no. Still, they are still infected. doing.”

McAllister said the state should close schools for a long time during Christmas, as up to one-third of children are asymptomatic.

“As far as we know, children are less likely to spread the disease than adults, but the risk is not zero,” he said. “Asymptomatic spreaders are probably less contagious than those sitting nearby and sneezing, but that’s not certain.”

Researchers also cough, And Was the most three It is found in 25, 19 and 16% of children with COVID-19 infection, respectively, but in reality it is slightly more common among children with negative COVID-19 test results, and therefore a positive test. Could not be predicted.

“Of course, children are at risk of being infected with various viruses, so the COVID-specific symptoms are not really nasal discharge, cough, sore throat, but loss of taste and smell, headache, fever, nausea and vomiting. And so on. “He said.

McAllister has published a similar paper in which his group has shown that sore throat and runny nose are not reliable signs of COVID-19 in adults, but the majority of adults (84%) Shows symptoms.

“Sore throat and runny nose mean that you have some kind of upper respiratory tract infection, but fever, headache, loss of taste and smell are infected with COVID-19 instead of another upper respiratory tract virus. It’s a big factor that indicates that you may have an infection. “He said that nausea and vomiting were less pronounced in adults.

McAllister added that he should stay home and be tested if he has symptoms. Even if you feel good, you should do everything you can to ensure your safety, such as wearing protective masks, washing your hands frequently, keeping distance, and avoiding meetings. Indoors.

“Some people infected with COVID feel good and unaware, so they interact with friends and unintentionally spread the virus. I think this is a big problem.” He said.


Follow the latest news about the outbreak of coronavirus (COVID-19)


For more information:
James A. King et al, Symptoms Related to Positive Results of SARS-CoV-2 Infection Swabs in Children, Alberta, Canadian Medical Association Journal (2020). DOI: 10.1503 / cmaj.202065

Quote: More than one-third of children with COVID-19 show no symptoms (November 30, 2020), https: //medicalxpress.com/news/2020-11-one-third-children-covid-symptoms Obtained from November 30, 2020. html

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