The virus most often behind the common cold is capable of preventing the flu virus.
It prevents the flu from infecting airways by jump-starting the body's immune defenses.
A study published Friday by The Lancet Microbe found this evidence recently.
They did an analysis of more than 13,000 patients with symptoms of a respiratory infection.
Those who had rhinovirus were not simultaneously infected with the flu virus.
Now researchers want to determine if rhinovirus offers similar protective effects against COVID-19.
