The Center For Disease Control

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INTRODUCTION The center for disease control (CDC) dates EHEC O157:H7 transmission to 1982.9 Its spread started with person to person contact and waterborne infection. Worldwide, incident rate ranges from 1 – 30 per 100,000 person with an increasing number of cases. About 73,000 persons are affected every year in the United States with about 67 death yearly 6. In Canada, in the town of Walkerton with 5000 people, an outbreak was reported with an estimated 2500 people affected 16. Germany has the highest fatality from all outbreaks worldwide with an estimated 4000 people affected and 71 deaths between 2010 and 201115. With the high number of cases per year, preventive measures against the disease should be considered. This includes sanitary…show more content…
EHEC is an infection of public health importance globally and curbing its emergence will reduce incidence rate and decrease morbidity and consequent mortality of especially the under-five infants. Escherichia coli (E.coli) is a bacterium mostly found in the gastrointestinal tracts of humans and animals, and one of the most important causes of diarrhea worldwide. Its pathogenicity depends largely on the strain causing the infection. Although several strains of E.coli have been isolated over the years, the E coli 0157:H7 remains unarguably the strain with the most significant public health problems in the United State after its outbreak in 1982 (most other strains are harmless) 5. The EHEC O157:H7 can survive in unfavorable acidic environment (pH 4.4) and usually grows and withstand temperatures up to 50 degree Celsius, hence it is usually destroyed by a much higher temperature, as high as 70degree Celsius. DESCRIPTION General Information Escherichia coli from the genus of Escherichia is a rod shaped bacterium with a size of about 2.0 micrometers long and 0.25–1.0 micrometer in diameter, having a cell volume of 0.6–0.7 μm3. E.coli is a gram negative bacterium (does not retain its primary
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