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Table 2 Percentages (numbers tested and positive) of pathogens besides B.pertussis causing respiratory symptoms in term and preterm infants. Denominators are specified per cell

From: Pertussis hospitalizations among term and preterm infants: clinical course and vaccine effectiveness

  Total group (n = 676) Probable and certain term infants (n = 596)a Certain term infants (n = 388)b Preterm infants (n = 80)
Respiratory syncytial virus 21% (62/293) 19% (49/257) 20% (34/169) 36% (13/36)c,d
Influenzavirus 34% (38/112) 31% (29/93) 35% (22/62) 47% (9/19)
Adenovirus 36% (35/98) 33% (27/82) 35% (18/51) 50% (8/16)
Human metapneumovirus 35% (28/81) 32% (22/68) 32% (12/37) 46% (6/13)
parainfluenzavirus 33% (25/76)) 28% (18/65) 28% (12/43) 64% (7/11)c,d
Rhinovirus 57% (40/70) 56% (33/59) 63% (25/40) 64% (7/11)
Mycoplasma pneumoniae 29% (19/65) 27% (15/55) 30% (10/33) 40% (4/10)
Bocavirus 56% (9/16) 42% (5/12) 44% (4/9) 100% (4/4)
Chlamydophila pneumoniae 41% (12/29) 48% (12/25) 60% (9/15) 0% (0/4)
Chlamydia psittaci 0% (0/1) 0% (0/1) not tested not tested
Cytomegalovirus 33% (4/12) 22% (2/9) 33% (2/6) 67% (2/3)
Coronavirus 56% (18/32) 50% (14/28) 56% (9/16) 100% (4/4)
Coxiella burnetii 0% (0/7) 0% (0/6) 0% (0/4) 0% (0/1)
Enterovirus 39% (9/23) 42% (8/19) 40% (6/15) 25% (1/4)
Haemophilus influenzae 75% (3/4) 75% (3/4) 100% (3/3) not tested
Klebsiella oxytoca 100% (1/1) not tested not tested 100% (1/1)
Klebsiella pneumoniae 100% (2/2) 100% (1/1) 100% (1/1) 100% (1/1)
Legionella 43% (3/7) 50% (3/6) 60% (3/5) 0% (0/1)
Moraxella catarrhalis 100% (5/5) 100% (4/4) 100% (3/3) 100% (1/1)
Bordetella parapertussis 0% (0/5) 0% (0/3) 0% (0/3) 0% (0/2)
Parechovirus 0% (0/3) 0% (0/2) 0% (0/2) 0% (0/1)
Streptococcus pneumoniae 100% (3/3%) 100% (1/1) 100% (1/1) 100% (2/2)
  1. aterm infants in main analysis
  2. bterm infants in the sensitivity analysis
  3. csignificant difference between certain+probable terms and preterms (main analysis)
  4. dsignificant difference between certain terms and preterms (sensitivity analysis)