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Table 2 Overall and seasonal acquisition and incidence (per 1000 person-seasons) of methicillin-resistant Staphylococcus aureus, Stenotrophomonas maltophilia, Achromobacter xylosoxidans, and Haemophilus influenzae among young U.S. children with cystic fibrosis, 2003 to 2009

From: Seasonality of acquisition of respiratory bacterial pathogens in young children with cystic fibrosis

    Season
  Overall Winter Spring Summer Autumn
  Cases (n) Incidencea Cases (n) Incidencea Cases (n) Incidencea Cases (n) Incidencea Cases (n) Incidencea
MRSA 910 16.4 238 19.5 207 15.4 195 13.5 270 17.4
S. maltophilia 1161 21.9 263 22.4 259 20.3 324 23.6 315 21.3
A. xylosoxidans 228 3.8 64 4.9 43 2.9 54 3.4 67 3.9
H. influenzae 2148 50.5 563 56.8 524 52.2 537 50.0 534 44.4
  1. MRSA, methicillin-resistant Staphylococcus aureus; S. maltophilia, Stenotrophomonas maltophilia; A. xylosoxidans, Achromobacter xylosoxidans; H. influenzae, Haemophilus influenzae
  2. a Per 1000 person-seasons