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Participant demographics.
| Non‐CF | CF | |
|---|---|---|
| Participants | 5 | 7 |
| Age range (year) | 2.3–6.5 | 0.3–5.8 |
| Male/female | 5/0 | 3/4 |
| Genotype (% F508Del homozygous) | N/A | 100% |
| Respiratory infection at sampling | N/A | 3 |
| Viral | 1 | |
| Bacterial (Pseudomonas aeruginosa) | 2 (0) | |
| Previous respiratory infection | N/A | 4 |
| Viral | 0 | |
| Bacterial (P. aeruginosa) | 4 (1) | |
| Neutrophil elastase positive | N/A | 5 |
| IL‐8 detected | N/A | 7 |
CF, cystic fibrosis; IL, interleukin.
