... smokershave an increased risk of having a positive tuberculin skin test, of having active TB, and of dyingfrom TB. Although we also found evidence that passive smoking and indoor air pollutionincreased ... bacco smoking and clinical TB disease wereconducted in 12 countries: China/Hong Kong, India, TheGambia, Guinee Conakry, Guinea Bissau, US, UK, Australia,Malawi, Estonia, Spain, and Thailand [2,36–57]. ... participants and dealt with the association between active smoking, passive smoking, indoor air pollution and TB. Studies wereincluded if they were published in English, Russian, or Chinese, and included...