Malassezia pachydermatisCarriage in Dog Owners

0301 basic medicine Malassezia atopic Research R Dermatitis Infectious and parasitic diseases RC109-216 04 agricultural and veterinary sciences Hand 3. Good health 0403 veterinary science 03 medical and health sciences Dogs Yeasts Animals, Domestic Zoonoses Carrier State Medicine Animals Dermatomycoses Humans Dog Diseases Fungemia Skin
DOI: 10.3201/eid1101.040882 Publication Date: 2012-03-01T23:14:07Z
ABSTRACT
Yeasts of the genus Malassezia serve as both commensal microorganisms and pathogens on the skin of humans and domestic animals. Although rare, cases of life-threatening fungemia in people have been attributed to Malassezia pachydermatis, for which dogs are a natural host. Zoonotic transfer has been documented from dogs to immunocompromised patients by healthcare workers who own dogs. We investigated the role of pet dogs as risk factors for mechanical carriage of M. pachydermatis on human hands. Dogs and their owners were sampled as pairs, by fungal culture and nested polymerase chain reaction (PCR). Although fungal culture was not a reliable means by which to detect carriage of the yeast on human hands, PCR identified M. pachydermatis on most (approximately equal to 93%) human participants. Human carriage of ubiquitous opportunistic pathogens such as M. pachydermatis underscores the importance of good hand hygiene by healthcare professionals.
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