In a child with cystic fibrosis, when does Staphylococcus aureus typically colonize?

In children with cystic fibrosis, Staphylococcus aureus typically colonizes the airways before the age of 20, usually occurring in early childhood. This bacterium is commonly found in the respiratory tracts of cystic fibrosis patients and is significant due to its potential to cause pulmonary complications and exacerbations.

Understanding this timeline is crucial because the early colonization by Staphylococcus aureus can impact the management and treatment of these patients. Regular microbiological assessments are necessary for early detection and intervention to mitigate respiratory complications.

While some children may begin to show signs of colonization as early as infancy or toddlerhood, by the time they reach the age of 10, a significant number have already been colonized, predisposing them to further respiratory issues. The likelihood of colonization increases with age, which ultimately supports the correct answer that emphasizes colonization before the age of 20. Monitoring for this pathogen is important for the overall care of children with cystic fibrosis.