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OBJECTIVES: We sought to quantify the effect of good smoking hygiene on infant risk of respiratory tract infection in the first 12 months of life. METHODS: A cohort of 4486 infants in Tasmania, Australia, was followed from birth to 12 months of age for hospitalization with respiratory infection. Case ascertainment was 98.2%. RESULTS: Relative to the infants of mothers who smoked postpartum but never in the same room with their infants, risk of hospitalization was 56% (95% confidence interval [CI] = 13%, 119%) higher if the mother smoked in the same room with the infant, 73% (95% CI = 18%, 157%) higher if the mother smoked when holding the infant, and 95% (95% CI = 28%, 298%) higher if the mother smoked while feeding the infant. CONCLUSIONS: Parents who smoke should not smoke with their infants present in the same room.


Journal article


Am J Public Health

Publication Date





482 - 488


Adult, Cohort Studies, Environmental Exposure, Female, Hospitalization, Housing, Humans, Infant, Infant Care, Infant Welfare, Infant, Newborn, Mother-Child Relations, Mothers, Respiratory Tract Infections, Risk Assessment, Risk Factors, Tasmania, Tobacco Smoke Pollution