"#Rhinovirus infections, which trigger increased expression of antiviral airway genes, are linked to a lower risk of SARS-CoV-2 infection."
-virus interfenece, or virus-virus interactions at work.
www.cidrap.umn.edu/covid-19/rec...
1/2
A recent common cold may nearly halve risk of COVID-19, study suggests
Among COVID-infected participants, recent rhinovirus infection was tied to a 9.6-fold lower SARS-CoV-2 viral load, or amount of virus in the body.