Staphylococcus aureus is one of the most potent human bacterial pathogens, yet 20-30% of us carry this bacterium in our nose as part of our habitual microbiota. Studies have found association between smoking and S. aureus nasal carriage, while data on smokeless tobacco (SLT) have been largely lacking. As use of SLT is increasing in Norway, it would be interesting to see if the use of SLTs influences ...