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Streptococcus suis is an important pathogen associated with a wide range of diseases in pigs, constituting one of the most important problems of the swine industry around the world. However, infection with S. suis in humans is very rare and is considered an unusual zoonosis because from 1968 until 2004 had described only around 250 cases around the world. The emergence of some very large outbreaks of infection with S. suis in Europe and Southeast Asia from the year 2005, and the increase in the incidence of cases in other European countries, has made to think that we can find about a process of emergence of these infections. S. suis is a Gram-positive facultative anaerobic coccus, belonging to R, S, and T Lancefield groups. Until recently, there have been major difficulties in the identification and differentiation of this organism of other Streptococcus species, what could be the cause of an underestimation of these infections. It's currently with diagnostic tools and molecular typing that allow a better characterization of the isolates. The most frequent S. suis in humans infection is meningitis, but endocarditis, pneumonia, cellulitis, rhabdomyolysis, arthritis, spondylodiscitis, abscess epidural, peritonitis, enteritis, endophthalmitis, uveitis, septicemia with septic shock and multiorgan failure streptococcal toxic shock syndrome have also been reported. In our country less than 20 cases of S. suis infection have been documented, so we believe interest communicate a new case of S. suis meningitis.

We herewith report the first case of uncomplicated urinary tract infection due to Corynebacterium striatum in an ambulatory patient without any other predisponent risk factors. C. striatum is a ubiquitous saprophyte of human skin and mucous membranes, which has been occasionally associated with infection in patients hospitalized or immunocompromised patients with underlying diseases. We conclude that C. striatum should be considered an emerging pathogen in both immunocompetent and immunocompromised hosts.

Presentamos un caso de infeccion diseminada por Mycobacterium avium con afectacion hepatica en un paciente diagnosticado de SIDA quince anos antes. Las infecciones por Mycobacterium avium complex (MAC) son una complicacion frecuente en los pacientes infectados por el VIH, causando una importante morbi-mortalidad. Desde la llegada del tratamiento antirretroviral de gran actividad (TARGA) frente al VIH, las tasas de infecciones producidas por MAC han disminuido significativamente; sin embargo, a pesar de que el TARGA ha alterado la frecuencia y el desenlace de estas infecciones, MAC sigue siendo una complicacion importante en el SIDA. Se discute la microbiologia de este microorganismo, asi como se revisa la epidemiologia, factores de riesgo, presentaciones clinicas, metodos diagnosticos y opciones terapeuticas actuales de las infecciones por MAC. Palabras clave: Mycobacterium avium complex; VIH; TARGA. Disseminated Mycobacterium Avium Disease in a HIV-Infected Patient. Case Report and Review of the Literature ABSTRACT We report a case of disseminated Mycobacterium avium infection with hepatic involvement in a patient diagnosed with AIDS fifteen years ago. Mycobacterium avium complex (MAC) infection is a common complication in HIV-infected patients, causing an important morbi-mortality. Since the advent of highly active antiretroviral therapy (HAART), the rate of MAC infection has declined substantially; however, although HAART has altered the frequency and outcome of these infections, MAC remains an important complication of AIDS. We discuss the microbiology of this organism and review the epidemiology, risk factors, clinical presentations, diagnostic methods and current therapeutic options on MAC infections. Key words: Mycobacterium avium complex; HIV; HAART.

We herewith report the first case of uncomplicated urinary tract infection due to Corynebacterium striatum in an ambulatory patient without any other predisponent risk factors. C. striatum is a ubiquitous saprophyte of human skin and mucous membranes, which has been occasionally associated with infection in patients hospitalized or immunocompromised patients with underlying diseases. We conclude that C. striatum should be considered an emerging pathogen in both immunocompetent and immunocompromised hosts.