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A case of epidemic keratoconjunctivitis complicated by Alcaligenes xylosoxidans infection.

PURPOSE: To report a case of epidemic keratoconjunctivitis complicated by Alcaligenes xylosoxidans. METHODS: A 37-year-old man suffered epidemic keratoconjunctivitis in both eyes. Eleven days later, he developed a corneal ulcer in his left eye. Bacterial staining, culture, and antibiotics sensitivity test were performed from a corneal scrape. RESULTS: The cultures revealed a growth of Alcaligenes xylosoxidans, and the patient was treated with ceftazidime and levofloxacin, based on the sensitivity test results. After 21 days of treatment, the infection was resolved with mild scaring and final vision in the left eye of 20/20. CONCLUSIONS: Alcaligenes xylosoxidans should be considered a rare but potential pathogen able to produce comeal ulcer complication in epidemic keratoconjunctivitis.

Achromobacter denitrificans↗

[Alcaligenes xylosoxidans--a pathogen of chronic ear infection].

INTRODUCTION: We discuss a case of a 48-year old man admitted to our Department with symptoms of chronic ear infection, that didn't answer to typical conservative treatment. The culture of the discharge was positive for Alcaligenes xylosoxidans. MATERIAL AND METHODS: We report characteristic features of that bacteria and we compare them with features of other pathogens typical for otitis media. We present performed treatment too. RESULTS: Alcaligenes xylosoxidans is a nonfermenting gram-negative rod. It can be confused with other nonfermentive, gram-negative rods, especially Pseudomonas species, in clinical specimens so that its role as a significant pathogen may be underestimated. Alcaligenes xylosoxidans is a part of normal human flora, especially skin and gastrointestinal tract, and can cause serious infections in human (especially in patients with immunodeficiency and premature children). CONCLUSIONS: Reports about Alcaligenes xylosoxidans as a cause of chronic otitis media are very rare and it can be supposed to stay a new kind of ear infection.

Achromobacter denitrificans↗