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Smoking During Pregnancy Triples Meningitis Risk Factor For Children

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SMOKING PREGANCY
Smoking during pregnancy can triple risk of child succumbing to a cause of meningitis | Alamy

Smoking when pregnant can triple the risk of a child succumbing to a major cause of meningitis, research has shown.

Inhaling tobacco smoke in the home also made young children vulnerable to invasive meningococcal infection.

In the case of those under the age of five, passive smoking more than doubled the risk, a study found.

Scientists estimated that each year exposure to second-hand smoke led to several hundred extra children being affected by invasive meningococcal disease in the UK.

Meningococcal bacteria are responsible for the most dangerous form of meningitis and can also invade the blood, lungs or joints.

One in 20 of those struck by invasive meningococcal disease will die despite medical attention and one in six will be left severely disabled.

Several studies have suggested a link between passive smoking and meningococcal disease.

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To investigate the association, scientists carried out a systematic review of 18 studies and pooled their results.

This kind of meta-analysis can uncover trends that may be missed by individual studies.

The findings, published in the online journal BMC Public Health, show that exposure to second-hand smoke both in the home and womb significantly increases the risk of meningococcal disease.

Passive smoking in the home doubled the risk in children and raised it even further in the under-fives.

For children whose mothers smoked during pregnancy, the risk was three times higher than for children born into non-smoking households.

Study leader Dr Rachael Murray, from the UK Centre for Tobacco Studies at the University of Nottingham, said: "We estimate that an extra 630 cases of childhood invasive meningococcal disease every year are directly attributable to second-hand smoke in the UK alone.

"While we cannot be sure exactly how tobacco smoke is affecting these children, the findings from this study highlight consistent evidence of the further harms of smoking around children and during pregnancy, and thus parents and family members should be encouraged to not smoke in the home or around children."

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