People with “silent” COVID-19 infections have as much coronavirus in their nose and throat as people with symptoms, a study published online in the journal reveals rib cage..
Given how many of these people are, they are one-fifth of those infected, and studies show that they may play an important role in promoting the spread of COVID-19, researchers said. Is a warning policy.
People who are infected with SARS-CoV-2, the virus that causes COVID-19, but have no symptoms, Viral load..
However, it is not clear how heavy the virus is and how much it contributes to the spread of the virus.
To find out, the researchers compared the viral load of 213 people. All tested positive for SARS-CoV-2, but not all showed symptoms of COVID-19 infection.
Close contact with this population early in the pandemic after a large-scale outbreak of COVID-19 in Daegu, South Korea (a) Religious groups) Traced. As a result, more than 3000 cases of COVID-19 were discovered. Symptoms Severity from none to severe.
People with mild or no symptoms were admitted to a dedicated care facility for isolation and monitoring. 213 participants in this study were admitted to one such facility.
If none of the following was present, it was classified as asymptomatic. Chills; muscle pain (muscle pain); malaise; Runny nose (Rhinorrhea); stuffy nose; loss of taste and smell; sore throatDysphagia; Cough; Sputum production; Coughing; Headache; Dizziness; Loss of appetite; Nausea; Vomiting, abdominal pain; And diarrhea.
Before the isolation period, on average 6 days from the first swab test, about one-fifth (41; 19%) showed no symptoms: 39 (95%) further swab tests on the nose and throat. Received 13 Average number of days to measure viral load after initial diagnosis.
Of the remaining 172 (81%) with mild symptoms, 144 were retested and a total of 183 were included in the final analysis.
More than half (21; 54%) of asymptomatic patients were positive for SARS-CoV-2, and nearly two-thirds (92; 64%) of mildly symptomatic patients were positive. However, there was no significant difference in viral load between the two groups.
This is an observational study, and researchers warn that a positive swab test does not necessarily indicate the presence of a live virus.
They say further research is needed to determine whether persistence of viral DNA in asymptomatic people guarantees preventative quarantine measures.
The majority of participants were also in their 20s and 30s, suggesting that the findings may not apply to other age groups.
Nonetheless, they point out: “Most asymptomatic individuals with COVID-19 health care worker And if they continue to live within the community, such individuals may act as an essential driving force for the expansion of the COVID-19 community and the ongoing pandemic state.
Researchers are advised that the test should be extended to specific groups as a precautionary measure until the duration and extent of infection in asymptomatic individuals is known.
In the linked podcast, the lead author, Professor Sung-Han Kim, explains: “Our data further support the general use of face masks, with or without symptoms, and extend to include the scope of the SARS-CoV-2 test. Asymptomatic individuals In high-risk environments such as special nursing homes and medical facilities. ”
Sang Hyun Ra et al. Upper respiratory tract viral load in asymptomatic individuals and mildly symptomatic patients with SARS-CoV-2 infection rib cage (2020). DOI: 10.1136 / thoraxjnl-2020-215042
British Medical Journal
Quote: People with COVID-19 “silent” have as much coronavirus as those with symptoms (September 23, 2020). https: //medicalxpress.com/news/2020-09-people-silent-covid-coronavirus- sympes.html
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