Isolation of Hanseniaspora uvarum, a yeast of the ascomycetes group, whose
anamorph corresponds to Kloeckera apiculata, obtained from stool and two un
gual specimens from three patients, is reported. This yeast has been found
in soil, water, various fruits, bivalve molluscs, crabs, prawns and fruit f
lies; in Spain, it has been described in the fermentation processes of some
wines. In our region, it has also been found in the intestine of mackerel
(Scomber scombrus). Its finding in humans constitutes a clinical rarity.