Prenatal and post-natal exposure to antibiotics and risk of asthma in childhood

Maternal use of any antibiotics during pregnancy was associated with an increased risk of asthma in the offspring. Several maternal specific antibiotics were associated with the risk of asthma, and the strongest association was observed for cephalosporins. A child’s use of antibiotics during the first year of life was associated with an increased risk of asthma. The child’s use of cephalosporins, sulphonamides and trimethoprim, macrolides and amoxicillin was associated with an increased risk of asthma.