People with asymptomatic SARS-CoV-2 infection have an upper respiratory viral load as those with mild symptoms
They are relatively common so may act as important driver of viral spread, warn researchers 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. Given how many of these people there are—a fifth of those infected, the study findings show–they may