A Strain of Escherichia Coll (E. coli O-143) with an Antigenstructure Completely Identical with Sh. boydii 8

Abstract

in April, 1958, a strain of E. coli, i. e. our 59-58, was isolated by the authors from a stool of dysentery patient (male, 39) in pure culture. The stool was obtained from the patient in the acute stage and was mucous with blood.
This strain cultured was non-motile and behaved biochemically as shown in Tab. 1.
The serological examinations revealed that the 0 antigen of E. coil 59-58 neither belonged nor was related to the 0 antigens of 0 Groups (1-136) of E. coli known so far. However, the 0 and K antigens of this E. coli were, as shown in Tab. 2, almost completely identical with those of Sh. boydii 8, the serotype of shigellae known to have no antigenic relationship to the already established 0 Groups (1-137) of E. coll.
Thus it was concluded that our E. coli 59-58 was a hitherto undescribed newserotype of E. coli.
Author's experimental results were fully confirmed by Dr. Ewing and by agreement with Dr.ørskov Ewing had designated our strain 59-58 as Escherichia coli 0 Group 143.