Water Borne Pathogens

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Water Borne Pathogens




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Water Borne Pathogens

Presented by Mr. Donald LaFara,

NDEP/BSDW Laboratory Certification Program Manager

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Transmission

Infection with E. coli O157:H7 follows ingestion of contaminated food or water, or oral contact with contaminated surfaces. It is highly virulent, with a low infectious dose: an inoculation of fewer than 100 CFU of E. coli O157:H7 is sufficient to cause infection, compared to over one-million CFU for other pathogenic strains.

1993 Jack in the Box E. coli Outbreak

Occurred when 732 people were infected with the Escherichia coli O157:H7 bacterium originating from undercooked beef patties in hamburgers. The outbreak involved 73 Jack in the Box restaurants in California, Idaho, Washington and Nevada and has been described as "far and away the most infamous food poison outbreak in contemporary history”. The majority of the victims were children aged under 10-years old.

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Signs and symptoms

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Twenty years ago, Milwaukee gave the nation a reminder of the importance of providing safe clean, water and keeping our lakes and waterways healthy. On April 7, 1993, the Mayor of Milwaukee issued a boil water notice because it contained the parasite Cryptosporidium.The warning came too late for many residents who fell ill. Over 400,000 people in the metro area were sickened and at least 69 died. Store shelves were cleaned out of anti-diarrheal medications while manufacturers, schools and hospitals were hit by large numbers of sick employees.It was the largest epidemic of documented waterborne disease in U.S. history. The city spent $89 million from 1994 to 1998 to upgrade its two water filtration plants and prevent another outbreak.

Twenty years ago, Milwaukee gave the nation a reminder of the importance of providing safe clean, water and keeping our lakes and waterways healthy. On April 7, 1993, the- Mayor of Milwaukee issued a boil water notice because it contained the parasite

Cryptosporidium

. The

warning came too late for many residents who fell ill. Over 400,000 people in the metro area were sickened and at least 69 died. Store shelves were cleaned out of anti-diarrheal medications while manufacturers, schools and hospitals were hit by large numbers of sick employees

.

It

was the largest epidemic of documented waterborne disease in U.S. history.

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The best outcome will be to reduce and control the

biofilm

buildup

where the bacteria reside and multiply.

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