Table 2

Clinical features of children on PICU and wards with pertussis (including linked cases) compared with children on PICU with other diagnoses (categorical variables)

Ward: pertussis (n=8)PICU: pertussis (n=25)PICU: other diagnoses (n=101)
Cough8/823/2582/101
Paroxysmal6/814/2434/89
Whoop4/49/243/87
Vomiting4/415/2549/101
Fever5/811/2545/101
Apnoea3/817/2540/100
Cyanosis8/816/2551/100
Pneumonia05/2514/96
Conjunctival haemorrhage01/253/101
Death02/256/101