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Table 3 Results of overdispersed Poisson log-linear regression evaluating seasonal incidence of methicillin-resistant Staphylococcus aureus, Stenotrophomonas maltophilia, Achromobacter xylosoxidans and Haemophilus influenzae acquisition 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

 

Respiratory Pathogen

MRSA

S. maltophilia

A. xylosoxidans

H. influenzae

IRR

(95% CI)

IRR

(95% CI)

IRR

(95% CI)

IRR

(95% CI)

Winter

1.0

Referent

1.0

Referent

1.0

Referent

1.0

Referent

Spring

0.79*

(0.65, 0.96)

0.91

(0.76, 1.08)

0.59*

(0.39, 0.89)

0.92

(0.81, 1.04)

Summer

0.69*

(0.57, 0.84)

1.05

(0.89, 1.25)

0.69

(0.47, 1.01)

0.88*

(0.78, 0.99)

Autumn

0.89

(0.75, 1.07)

0.95

(0.80, 1.12)

0.80

(0.56, 1.15)

0.78*

(0.69, 0.88)

  1. MRSA, methicillin-resistant Staphylococcus aureus; S. maltophilia, Stenotrophomonas maltophilia; A. xylosoxidans, Achromobacter xylosoxidans; H. influenzae, Haemophilus influenzae; IRR, incidence rate ratio; CI, confidence interval
  2. * P < 0.05