Shigella boydii Bacteremia in an Ederly Patient with No Underlying Disease
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Shigella bacteremia is rare, occurring mainly in children. Shigella species often cause diarrhea or gastrointestinal inflammation in humans and are rarely associated with bacteremia. This report describes an unusual case of Shigella boydii bacteremia in an 84-year-old patient visiting our hospital after experiencing nausea, vomiting, and febrile sensation for 2 days. Peripheral blood cultures revealed S. boydii and 16S rDNA sequence analysis produced the same result. However, the organism was not isolated from the patient’s stool. She was started on ciprofloxacin, to which this organism is sensitive, and was subsequently discharged with instructions to complete a 14-day course of ciprofloxacin. Shigellosis is usually a self-limiting enteric disease. However, in contrast to its isolation from both blood and stool, isolation of the organism from blood only is associated with a high mortality rate. As is frequently pointed out, blood cultures should be obtained from elderly or immunocompromised patients with acute febrile gastroenteritis to detect infection caused by enteric pathogens, including Shigella. (Ann Clin Microbiol 2014; 17:20-22)
Abstract
Shigella bacteremia is rare, occurring mainly in children. Shigella species often cause diarrhea or gastrointestinal inflammation in humans and are rarely associated with bacteremia. This report describes an unusual case of Shigella boydii bacteremia in an 84-year-old patient visiting our hospital after experiencing nausea, vomiting, and febrile sensation for 2 days. Peripheral blood cultures revealed S. boydii and 16S rDNA sequence analysis produced the same result. However, the organism was not isolated from the patient’s stool. She was started on ciprofloxacin, to which this organism is sensitive, and was subsequently discharged with instructions to complete a 14-day course of ciprofloxacin. Shigellosis is usually a self-limiting enteric disease. However, in contrast to its isolation from both blood and stool, isolation of the organism from blood only is associated with a high mortality rate. As is frequently pointed out, blood cultures should be obtained from elderly or immunocompromised patients with acute febrile gastroenteritis to detect infection caused by enteric pathogens, including Shigella. (Ann Clin Microbiol 2014; 17:20-22)
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