Zoonotic sporothricosis transmitted by cats in Rio de Janeiro, Brazil. A case report.

Sporotricosis is a ubiquitous mycosis characterized by nodular lesions of the cutaneous or subcutaneous tissues and adjacent lymphatics that usually suppurate and ulcerate. Secondary spread to the articular surface and bone or dissemination to the central nervous system, genitourinary tract or lungs is also possible. All forms of sporothricosis are caused by a single species, Sporothrix schenkii. In the great majority of cases the fungus gains entrance into the body through trauma to the skin with some kind of plant materials such as thorns or splinters. Zoonotic transmission is also possible and several animals are implicated. This kind of transmission is most frequently a professional hazard of people dealing with animals but in some parts of the world, including Rio de Janeiro city and metropolitan region, an increase in transmission by pet cats has been noted. In these cases the infection may be observed in the family environment, an important epidemiological consideration to clinicians.