Definition | ≥ 2 isolates ≥ 3 months apart within 1 year | ≥ 2 isolates on separate days within 2 years | ≥ 2 isolates on separate days within 1 year |
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Organisms | Pseudomonas aeruginosa Staphylococcus aureus Haemophilus influenzae Streptococcus pneumoniae Klebsiella pneumoniae | Mycobacterium avium complex Mycobacterium abscessus | Stenotrophomonas maltophilia Aspergillus sp. |