Colonization, persistence, and tissue tropism of Escherichia coli 026 in conventionally reared weaned lambs

Article Abstract:

An stx-negative Escherichia coli 026 strain of ovine origin was inoculated orally into 6-week-old lambs to monitor the shedding pattern of the 026 strain by serial bacteriological examination of feces. The result data indicate that Escherichia coli 026 readily colonizes 6-week-old lambs, but the sparseness of attaching-effacing (AE) lesions suggests that 026 is well adapted to this host, and mechanisms other than those dependent upon intimin might play a role in persistence.

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Novel method for rapid assessment of antibiotic resistance in Escherichia coli isolates from environmental water by use of a modified chromogenic agar

Article Abstract:

A novel method is described and assessed for screening Escherichia coli resistance to antibiotics in environmental samples by using modified Difco MI agar impregnated with selected antibiotics (MI-R). The new method is not only highly reproducible, accurate and precise, but has also reduced the labor and cost, thereby allowing greater analysis and spatial assessment.

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Recovery of Escherichia coli from soil after addition of sterile organic wastes

Article Abstract:

A hypothetical study was conducted to prove that addition of biosolid nutrients to soil would enhance recovery of Escherichia coli naturally found in soil. The experimental effect was most marked for the deeper soil layers, with increases of about 2.6 orders of magnitude in E. coli most probable number.

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