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Taxonomy Family: Lactobacillaceae Natural habitats They are commonly found in fermented vegetables, fermented dairy products and meat. They are being used as probiotic supplements in treating constipation, diarrhea, relieving stress, enhancing immune response among birds and small animals, human trials are still limited. Clinical significance P. acidilactici is the most common clinical isolate of pediococci They have been isolate from bacteremia, sepsis and hepatic abscess in compromised patients
Taxonomy Family: Aerococcaceae Natural habitats They are in the air and dust and on the skin of people, and have been described as an airborn organism prevalent in occupied rooms. Aerococci could be confused with streptococci and staphylococci since they have many characteristics in common, and this may account for the fact that the presence of A. viridans has not often been reported in the hospital environment or in clinical specimens. Clinical significance A. viridans has been noted as a contaminant in clinical cultures and infrequently as a clinical significant isolate from cases of endocarditis and bacteremia.
Taxonomy Family: Aerococcaceae Natural habitats A. urinae is a rarely reported pathogen, possible due to the difficulties in the identification of the organism. Clinical significance Isolates of this species were originally isolated from the urine of (older) patients with urinary tract infections and were denoted Aerococcus-like organisms. Infections with this bacterium has likely been underestimated. A. urinae may also cause invasive infections including urosepsis, lymphadenitis, spondylodiscitis and infective endocarditis especially in elderly men with underlying urinary tract diseases.
