Smokers inhale more tar, nicotine and carbon monoxide when measured with WHO method RIVM has measured the amount of tar, nicotine and carbon monoxide (TNCO) in all filter cigarettes sold in the Netherlands with the WHO Intense method.
Influenza-like Illness Incidence Is Not Reduced by Influenza Vaccination Influenza vaccination reduces the number of influenza virus infections but not the overall number of illness.