The risk of meningococcal infection in a child under 18 increases by 3.8 times if his mother smokes.
Among adults, smoking increases the risk of meningococcal infection by 2.4 times, passive smoking by 2.5 times, and chronic disease by 10.8 time.
Passive smoking increases the risk of meningococcal infection by 2.2 times. When both parents smoke, the risk rises by a factor of 8. More:   
In Ghana, where meningococcal meningitis is much more common than in developed countries, cooking on wood-fired ovens increases the risk of disease is 9 times.
If parents only smoke outside the home, this does not reduce the level of nicotine in the hair in children, which may indicate that smokers continue to exhale nicotine after smoking. This hints that the risk of meningococcal infection will not go down if to ban smoking only in some places like houses, cars and hospitals, and a total ban is needed. But it is known that relatively few people quit smoking, so the vaccination of children will probably be more effective. In addition, there is hope that children can save from meningococcus also of their smoking parents through collective immunity.The Association between Active and Passive Smoking and Latent Tuberculosis Infection in Adults and Children in the United States: Results from NHANES. 2014, Lindsay, PLoS One
Active and passive smoking is associated with a doubling of the risk of tuberculosis. For smokers in the past and present increased the risk of contracting a tuberculosis bacterium, the risk of developing tuberculosis, the risk of complications, and the risk of dying from tuberculosis.
The risk of recurrent tuberculosis was 2-fold higher in smokers more than 10 cigarettes a day than non-smokers. More:    
Smoking is associated with an increase in the risk of invasive pneumococcal infection in adults 4.1 times, and passive smoking - 2.5 times.
Chronic disease is associated with an increase in risk in 2.6 times. People with incomplete secondary education are sick 2.8 times more often, and with secondary education is 2 times more likely, compared with people with higher education.
Passive smoking is associated with an increased risk of Hib by 40%. Kindergarten - with a 2.9-fold increase in risk. BF - with a 50% reduction in risk. Blacks were 4.1 times more sick.Risk factors for invasive Haemophilus influenzae type b in Los Angeles County children 18-60 months of age. 1992, Vadheim, Am J Epidemiol
An analysis of all cases of Hib in Los Angeles in 1988/9 (8.7 million people, of whom 750,000 are children under the age of 5).A total of 88 cases were recorded among children during the year, with a lethality rate of 4.5%.
Risk Hib in children in homes where more than 2 smokers live was six times higher.
Six or more people living in one house are associated with an increased risk of Hib 3.71 times Negroes are 3.47 times more likely to suffer and also increase the risk of chronic disease and low income.
Vaccination and breastfeeding (in white) reduce the risk of Hib.Vac vaccination with a polysaccharide vaccine increased the risk of Hib.
In another iss The study found that the smoking parent increased the Hib risk by 2.37 times.
У младенцев чьи матери курили во время беременности, риск смерти был в 4 раза выше по сравнению с некурящими матерями. Риск СВДС был повышен также если матери продолжали курить после рождения. Чем больше мать курила, чем выше был риск смерти. Курение отца тоже повышало риск СВДС. Еще: 
У младенцев матерей-алкоголиков риск СВДС повышен в 7-8 раз выше, а риск смерти от других причин был в 2.3 раза выше. Еще: