A Case of Recurrent Erysipelas Caused by Streptococcus mitis Group

Abstract

The aetiology of erysipelas remains poorly defined though beta-haemolytic streptococci are considered as the main causative pathogens. We describe a case of a 70-year-old woman with recurrent erysipelas in her left arm due to infection with streptococci of the mitis group. Her past medical history includes lymphoedema of the left arm secondary to lymph node dissection due to breast cancer surgery. On seven different occasions during a decade, she has presented a clinical picture of erysipelas and in three of them with Streptococcus mitis group bacteraemia. The results indicate that two cases were caused by Streptococcus mitis and one case was caused by Streptococcus oralis. This is, to our knowledge, the first reported cases of S. mitis and of S. oralis as the causative agents of erysipelas.

The c‐di‐AMP signaling system influences stress tolerance and biofilm formation of Streptococcus mitis

“…Immunocompromised individuals such as neutropenic cancer patients are especially vulnerable to bacteremia caused by S. mitis (Basaranoglu et al, 2019 ; Marron et al, 2000 ; Shelburne et al, 2014 ). In addition, local infections where S. mitis has been identified as the disease‐causing agent have been reported sporadically (Al‐Farsi et al, 2018 ; Byrd & Nemeth, 2017 ; Lu et al, 2003 ; Nygren et al, 2018 ). Persistent colonization of the oral cavity requires that bacteria can adhere to epithelial cells, form biofilm on the teeth, and avoid inducing a strong host immune response.…”

The Role of Streptococcus Mitis and Streptococcus Viridans in the Development of Infectious Diseases (Review)

“…В клинической практике описывается случай у 62-летнего мужчины с раком предстательной железы, у которого были множественные абсцессы оппортунистической инфекции, вызванные S. mitis, замаскированные под метастазы [28]. Streptococcus mitis являлся причиной случая рожистого воспаления у 70-летней женщины после перенесенной операции по удалению опухоли молочной железы [29]. Особое значение в развитии оппортунистических инфекций имеют хронические очаги воспаления: крипты гипертрофированных миндалин, кариозные зубы и т.д.…”