Category Archives: Water Safety

USA – Irrigation water likely link in Utah E. coli Outbreak

Posted on August 7, 2023 by | Leave a comment

Food Poison Journal

According to Utah health official and media, in the last two weeks, eight cases of E. coli (likely a shiga-toxin producing E. coli like E. coli O157:H7) were reported in Utah County residents, with at least five of the subjects hospitalized (likely with hemolytic uremic syndrome – HUS) due to the severity of symptoms.

Currently, all reported cases are residents of Lehi or have close ties to the city, says a statement from the Utah County Health Department.

Epidemiologists are working to identify the source of infection, it says. Preliminary investigation links the likely source of spread to using pressurized irrigation water for drinking and play.

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Posted in Contaminated water, E.coli, food bourne outbreak, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, foodborne outbreak, foodbourne outbreak, Illness, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, outbreak, STEC, STEC E.coli, Water, water microbiology, Water Safety

Research – Waterborne Infectious Diseases Associated with Exposure to Tropical Cyclonic Storms, United States, 1996–2018

Posted on August 6, 2023 by | Leave a comment

CDC

Abstract

In the United States, tropical cyclones cause destructive flooding that can lead to adverse health outcomes. Storm-driven flooding contaminates environmental, recreational, and drinking water sources, but few studies have examined effects on specific infections over time. We used 23 years of exposure and case data to assess the effects of tropical cyclones on 6 waterborne diseases in a conditional quasi-Poisson model. We separately defined storm exposure for windspeed, rainfall, and proximity to the storm track. Exposure to storm-related rainfall was associated with a 48% (95% CI 27%–69%) increase in Shiga toxin–producing Escherichia coli infections 1 week after storms and a 42% (95% CI 22%–62%) in increase Legionnaires’ disease 2 weeks after storms. Cryptosporidiosis cases increased 52% (95% CI 42%–62%) during storm weeks but declined over ensuing weeks. Cyclones are a risk to public health that will likely become more serious with climate change and aging water infrastructure systems.

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Posted in Contaminated water, Cryptosporidiosis, Cryptosporidium, E.coli, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Testing, Legionella, Legionnaires’ disease, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, STEC, STEC E.coli, Water, water microbiology, Water Safety

USA – DPH warns residents about severe Vibrio infections caused by consumption of raw shellfish or exposure to salt or brackish water

Posted on July 31, 2023 by | Leave a comment

CT Portal

The Connecticut Department of Public Health (DPH) is warning residents about the potential dangers of consuming raw shellfish and exposure to salt or brackish water along Long Island Sound, due to severe Vibrio vulnificus infections.

 Since July 1, three cases of V. vulnificus infections have been reported to DPH. The three patients are between 60-80 years of age. All three patients were hospitalized and one died.  One patient reported consuming raw oysters from an out-of-state establishment. Two patients reported exposure to salt or brackish water in Long Island Sound. Both patients had pre-existing open cuts or wounds or sustained new wounds during these activities which likely led to the infections. 

 “The identification of these severe cases, including one fatality, due to V. vulnificus is concerning,” said DPH Commissioner Manisha Juthani, MD. “People should consider the potential risk of consuming raw oysters and exposure to salt or brackish water and take appropriate precautions. Particularly during the hottest months of the summer, bacteria are more likely to overgrow and contaminate raw shellfish. Given our current heat wave, this may be a time to exercise particular caution in what you consume.”

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Posted in Contaminated water, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Testing, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Shellfish, Vibrio, Vibrio vulnificans, Vibrio vulnificus, Water, water microbiology, Water Safety

Ireland – Boil notice an ongoing risk for the immunocompromised in West Limerick -Cryptosporidium

Posted on July 31, 2023 by | Leave a comment

Limerick Post

LIMERICK residents who are at risk by being immunocompromised may be waiting months before they can shower in their own homes.

“Months” is how long Uisce Éireann says it may be until it can put a new treatment system in place to deal with cryptosporidium (a parasite found in human and animal faeces) found in the water supply at the Shannon Estuary Water Treatment Plant, which has seen a boil notice enforced in the area since May.

Affected households have been told that the water is safe to drink and to use to brush teeth if boiled, but medical experts warn that while infection can cause healthy people to become mildly ill, it can lead to a life-threatening illness for people with weak immune systems.

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Posted in Boil Water Notice, Contaminated water, Cryptosporidiosis, Cryptosporidium, Food Micro Blog, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Water, water microbiology, Water Safety

Denmark – Record number of finds of diarrhea-causing parasite in humans – Cryptosporidium

Posted on July 21, 2023 by | Leave a comment

SSI

water contamination

Around 800 Danes were diagnosed last year as being infected with a small single-celled intestinal parasite, Cryptosporidium, which can cause severe diarrhoea, abdominal pain, exhaustion and possibly nausea.

The many cases are a significant increase compared to previous years. The reason for the many new findings is probably primarily due to the introduction of more systematic analyzes of faecal samples at the clinical microbiology departments at the hospitals in Slagelse, Odense, Herlev and Aalborg.

“Cryptosporidium thus appears to be much more common in the population than we previously assumed. And this means that we have a diverse population of parasites whose sources and routes of infection are currently poorly understood. It is not a notifiable disease, but we follow the development through the samples that we receive,” says Rune Stensvold, senior researcher, Dept. Bacteria, parasites and fungi, Statens Serum Institut.

If you get sick from Crytosporidiosis it can last for a few weeks, but usually goes away on its own eventually, and is generally harmless.

In the past, sources of infection have been found among calves, but humans can also be infected via rodents. There are no vaccines against the parasite.

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Posted in Contaminated water, Cryptosporidiosis, Cryptosporidium, Food Illness, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Foodborne Illness, Illness, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, water microbiology, Water Safety

Research – Is Legionella Bacteria Becoming Antibiotic Resistant?

Posted on July 4, 2023 by | Leave a comment

Legionella Control

In this article the water safety specialists at Legionella Control International look at the role of antibiotics in protecting humans against pathogenic organisms, paying particular attention to waterborne bacteria including Pseudomonas aeruginosa and legionella.

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Posted in Antibiotic Resistance, Contaminated water, Decontamination Microbial, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Legionella, Legionnaires’ disease, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Water, water microbiology, Water Safety

Research – Estimating Waterborne Infectious Disease Burden by Exposure Route, United States, 2014

Posted on July 2, 2023 by | Leave a comment

CDC

Abstract

More than 7.15 million cases of domestically acquired infectious waterborne illnesses occurred in the United States in 2014, causing 120,000 hospitalizations and 6,600 deaths. We estimated disease incidence for 17 pathogens according to recreational, drinking, and nonrecreational nondrinking (NRND) water exposure routes by using previously published estimates. In 2014, a total of 5.61 million (95% credible interval [CrI] 2.97–9.00 million) illnesses were linked to recreational water, 1.13 million (95% CrI 255,000–3.54 million) to drinking water, and 407,000 (95% CrI 72,800–1.29 million) to NRND water. Recreational water exposure was responsible for 36%, drinking water for 40%, and NRND water for 24% of hospitalizations from waterborne illnesses. Most direct costs were associated with pathogens found in biofilms. Estimating disease burden by water exposure route helps direct prevention activities. For each exposure route, water management programs are needed to control biofilm-associated pathogen growth; public health programs are needed to prevent biofilm-associated diseases.

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Posted in Biofilm, Contaminated water, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Water, water microbiology, Water Safety

USA – More than 30 students have reported illness after Legionella discovery at Kettering field house

Posted on June 22, 2023 by | Leave a comment

WHIO

Kettering City Schools says Legionella was found in the water at the district’s Roush Stadium and more than 30 students have reported being sick.

The district received test results on Saturday, June 17 of all water sources in the Field House at Roush Stadium. The water tested positive for Legionella, according to a letter sent to families of football players obtained by News Center 7.

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Posted in Contaminated water, Food Illness, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Testing, Foodborne Illness, Illness, Legionella, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Water, water microbiology, Water Safety

Research – Increased Incidence of Legionellosis after Improved Diagnostic Methods, New Zealand, 2000–2020

Posted on June 14, 2023 by | Leave a comment

cdc

Abstract

Legionellosis, notably Legionnaires’ disease, is recognized globally and in New Zealand (Aotearoa) as a major cause of community-acquired pneumonia. We analyzed the temporal, geographic, and demographic epidemiology and microbiology of Legionnaires’ disease in New Zealand by using notification and laboratory-based surveillance data for 2000‒2020. We used Poisson regression models to estimate incidence rate ratios and 95% CIs to compare demographic and organism trends over 2 time periods (2000–2009 and 2010–2020). The mean annual incidence rate increased from 1.6 cases/100,000 population for 2000–2009 to 3.9 cases/100,000 population for 2010–2020. This increase corresponded with a change in diagnostic testing from predominantly serology with some culture to almost entirely molecular methods using PCR. There was also a marked shift in the identified dominant causative organism, from Legionella pneumophila to L. longbeachae. Surveillance for legionellosis could be further enhanced by greater use of molecular typing of isolates.

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Posted in Contaminated water, Decontamination Microbial, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Legionella, Legionnaires’ disease, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology, Microbiology Investigations, Microbiology Risk, Water, water microbiology, Water Safety

UK – 50 sick in Cryptosporidium outbreak linked to farm

Posted on May 24, 2023 by | Leave a comment

Food Safety News

water contamination

Fifty cases of Cryptosporidium have been traced to a farm on an island off the south coast of England.

The UK Health Security Agency (UKHSA)’s South East branch has tried to contact people who visited Hazelgrove Farm from April to the start of May on the Isle of Wight.

People are thought to have become sick after coming into contact with animals. The farm halted animal petting activity in early May.

No ongoing risk
Dr. Anand Fernandes, the health protection consultant for UKHSA South East, said there is no ongoing risk to the public associated with the farm.

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Posted in Contaminated water, Cryptosporidiosis, Cryptosporidium, food bourne outbreak, Food Illness, Food Micro Blog, Food Microbiology, Food Microbiology Blog, Food Microbiology Research, Food Microbiology Testing, Foodborne Illness, foodborne outbreak, foodbourne outbreak, Illness, microbial contamination, Microbial growth, Microbiological Risk Assessment, Microbiology Investigations, Microbiology Risk, outbreak, water microbiology, Water Safety