Acta Clin Belg
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To investigate prevalence and determine risk factors for colonisation with Gram-negative bacteria in ICU patients. ⋯ Patients with high APACHE II-scores, on mechanical ventilation and with an ICU stay of more than 3 days are most at risk for colonisation with Gram-negative bacteria. These patients should be cared with the optimal precautions in the prevention of colonisation and infection.