The 213 participants in this study had been admitted to one such facility. Those with mild or no symptoms were admitted to dedicated care facilities for isolation and monitoring. This uncovered more than 3000 cases of COVID-19, ranging in symptom severity from none to severe. To try and find out, the researchers compared the viral load of 213 people, all of whom had tested positive for SARS-CoV-2, but not all of whom had symptoms of COVID-19 infection.įollowing a large cluster outbreak of COVID-19 in Daegu City, South Korea, early on in the pandemic, the close contacts of this cluster (a religious group) were traced. People infected with SARS-CoV-2, the virus responsible for COVID-19, but who don’t have symptoms, still carry potentially transmissible virus, known as the viral load.īut just how large this viral load might be, and to what extent it might contribute to the spread of the virus, isn’t clear. Given how many of these people there are-a fifth of those infected, the study findings show-they may have a key role in driving the spread of COVID-19, warn the researchers, who go on to suggest that this warrants extending testing provision. ![]() People with ‘silent’ COVID-19 infection have as much coronavirus in their noses and throats as those with symptoms, reveals research published online in the journal Thorax. ![]() They are relatively common so may act as important driver of viral spread, warn researchers People with ‘silent’ COVID-19 have as much coronavirus in their system as those with symptoms
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