Table 2. Antibiotic treatment and bacterial nasopharyngeal colonization of the cohorts of WP1-UK-ER.

	Control Children	Asthma Children
>1 antibiotic treatment within last 12 months before recruitment	19% (4/21)	42% (10/24)
≥3 antibiotic treatments within last 12 months before recruitment*	9,5% (2/21)	17% (4/24)
antibiotic treatment in children with S. aureus	0% (0/3)	83% (5/6)
antibiotic treatment in children with only H. influenza and/or M. catarrhalis	67% (2/3)	100% (5/5)

^*Most frequently used antibiotics by pediatricians: Control Children: cefaclor, amoxicillin; Asthma Children: clarithromycin, erythromycin, cefpodoxime (justified by the diagnosis: pneumonia).