Volume s1-30, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


This is a brief report on the types of Shigellae encountered in patients with dysentery in two United Fruit Company hospitals in Central America during 1949–1950. No attempt has been made to determine the incidence of the disease or the percentages of the types present in these localities.

The isolation and identification of the Shigellae was accomplished by commonly used methods. Preferably, mucopurulent portions of the fecal specimens were streaked on plates of S S Agar and McConkey's Agar. The characteristic colonies were then further differentiated by inoculation into slants of Triple Sugar Iron Agar. The Proteus group was excluded by the use of Urea Broth. Organisms giving typical reactions on Triple Sugar Iron Agar were then identified by cultural and serologic methods. Commercial Shigella Anti Serum (Lederle) was used for serologic identification.

The following table shows the types of Shigellae that were isolated from cases of dysentery in Tela, Honduras, and in Quepos, Costa Rica.


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