Smokers have a 12% increased risk of a laboratory-confirmed viral infection and a 48% increased risk of being diagnosed with respiratory illnesses Cigarette smoking is associated with an increased risk of viral infection, including coronavirus and respiratory illness.
Providing detailed data, the researchers said that smokers have a 12% increased risk of a laboratory-confirmed viral infection and a 48% increased risk of being diagnosed with respiratory illnesses.
The research has been published in the Nicotine and Tobacco Research journal "Past research has shown that smoking increases the risk of COVID-19 disease severity, but the risk of infection had been less clear," said study lead author Melanie Dove from University of California (UC) - Davis. "Our study findings show smokers have an increased risk of viral infection, including a coronavirus and respiratory illness," Dove said.
For this particular study, the experts re-analysed data from the British Cold Study (BCS), a 1986-1989 challenge research that exposed 399 healthy adults to 1 of 5 "common cold" viruses.