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Introduction: The increase of fungal infections is widely observed all over the world. Neonates, particularly those with immature immunity and multiple medications, parenteral nutrition and invasive diagnostic procedures are very prone to fungal infection. Aim: Assesment of risk of fungal infections in neonates requiring intensive care. Material and methods: 3544 blood samples and other samples like urine, skin swabs and mucous membrane swabs obtained from neonates were analysed. All neonates were hospitalised in Department of Neonatology at Poznan University of Medical Sciences. Samples were obtained in the second week of life and underwent a standard, mycological diagnostic procedure. Results: Yeast like fungi were grown in 194 cultures. The dominant was Candida albicans - present in 74.1%. Other isolated species were: C. glabrata, C. parapsilosis, C. sake, C. tropicalis and C. lusitaniae. There was no statistically important correlations between sites of isolations of yeast were found. Medium weight of neonates diagnosed with fungal infections was lower than the one of neonates with no infection, but it was not statistically significant. No lipophylic yeast were cultured. Conclusions: Candida-yeast are a real danger in neonatal intensive care units. [ABSTRACT FROM AUTHOR]