The occurrence of Candida spp. was investigated during a three-year period in two neonatal intensive care units, Budapest, Hungary. The species distribution among the 41 analysed cases was the following: C. albicans (30/41, 73%), C. parapsilosis (10/41, 24%) and C. glabrata (1/41, 3%). All of the isolates were susceptible to the tested drugs. There was a significant difference in the birth weight, the gestational age <30 weeks and the occurrence of caesarean section between the C. albicans and the C. parapsilosis groups of the cases. Respiratory tract colonization was the same (76-77%) in the extremely low birth weight (ELBW) and the very low birth weight (VLBW) groups. Comparing the ELBW, VLBW, and >1500 g birth weight groups, significant difference was found in the parenteral nutrition, the gestation weeks <36 or <30, the polymicrobial infection and the transfusion. The ratio of C. albicans, C. parapsilosis and C. glabrata was 9:7:1 in ELBW group; 6:3:0 in VLBW group and 15:1:0 in >1500 g group. The mortality rate for C. parapsilosis was higher than for C. albicans.