July 20, 2018

Norovirus Outbreak in Washington Associated with Raw Oysters

King County Public Health is investigation a cluster of "norovirus-like" illnesses associated with eating raw oysters in their area. That virus is found in the stool and vomit of infected people. The virus is very contagious and is spread through contamianted food and person-to-person contact. Consuming raw and undercooked shellfish, especially oysters, increases your chances of getting sick. On January 19, 2017, Public Health was notified about 4 cases of norovirus-like illness from the same party who eat raw oysters at Taylor Shellfish, located at 124 Republican Street in Seattle on January 4, 2017. The patients got sick about 24 hours after eating the oysters, with symptoms including nausea, vomiting, diarrhea, abdominal cramps, headache, and muscle aches. Environmental Health … [Read more...]

Maryland Vibrio Outbreak in 2010 Traced to Asia

A study published in the Journal of Applied and Environmental Microbiology, of the American Society for Microbiology, has discovered that a Vibrio parahaemolyticus outbreak in Maryland in 2010 was caused by raw oysters harvested from the Chesapeake Bay, but the bacteria in those oysters came from Asia. The outbreak sickened two people who ate raw oysters at two different restaurants in Baltimore. Neither patient had graveled outside of the state in the week before they got sick, and neither had other risk factors for Vibrio infections. The outbreak strain of Vibrio, called "sequence type B" was identified because it was the only strain present in both the patients' stools and in the oysters. And that particular strain had previously only been found in Asia. So how did bacteria from a … [Read more...]

Hawaii Recalls Korean Raw Oysters After Norovirus Outbreak

The Hawaii State Department of Health is recalling frozen, raw oysters imported from Korea because they are associated with a norovirus outbreak. The oysters were sold in bulk to distributors and food establishments in the state. Peter Oshiro said in a statement, "the department has already conducted product trace-backs and embargoed all of the suspect product on November 24, 2015 at various local shellfish distributors and restaurants. Although this product is not sold directly to the public, a recall has been issued as an additional safeguard to further notify anyone who may possess the product that it is unsafe and should be destroyed." A product embargo prohibits businesses from using or selling a product suspected of causing illness. At least 11 people have been sickened with … [Read more...]

Martha’s Vineyard Oyster Beds Closed for Vibrio

The Massachusetts Department of Health has ordered a precautionary closure of oyster beds in Edgartown in Katama Bay effective August 26, 2015. There are three confirmed cases of Vibrio food poisoning linked to consumption of raw oysters harvested in that area. Environmental conditions are conducive to the growth of the Vibrio parahaemolyticus bacteria there. Harvesting and processing of shellfish from these areas for commercial use is prohibited for the next seven days. If more cases are confirmed, an extended FDA-enforced closure could be issued. This is the first time a harvest area in Massachusetts has been closed because of Vibrio contamination this year. Vibrio bacteria grow in warmer waters, multiply as the temperature increases. The current water temperatures in Katama Bay … [Read more...]

In Canada, Oysters Recalled for Vibrio

Industry is recalling oysters harvested from British Columbia coastal waters on or before August 18, 2015 and intended for use as raw consumption for possible Vibrio parahaemolyticus contamination. Consumers should not eat these oysters raw and retailers and food service establishments should not sell or use them. There is no UPC number on these products, and the oysters are sold in various sizes. If consumers are unsure if they have affected oysters, check with their place of purchase. Vibrio is a naturally occurring bacteria that is present at high levels in some coastal waters when the water is warm. Most people contract a Vibrio infection by eating raw or undercooked shellfish, especially oysters. There is a Vibrio outbreak associated with the consumption of these products. … [Read more...]

Vancouver Restaurants Must Cook Oysters Before Serving

Vancouver Coastal Health has issued a public service announcement, stating that restaurants in that province must cook oysters harvested in British Columbia before serving. Only oysters harvested outside of that province may be served raw at this time. An ongoing outbreak of Vibrio parahaemolyticus relating to the consumption of raw oysters is ongoing in Canada. This bacteria is naturally occurring in coastal waters. This illness increases in the summer months, but the outbreak is large enough this year to warrant this preventative measure. Thirty-one people have been sickened with Vibrio infections so far in Vancouver. The actual number of Vibrio illnesses is probably much higher, since most cases of foodborne illness are not reported to authorities. Only 16 cases were reported in … [Read more...]

Oregon Campylobacter Outbreak Associated with Coos Bay Oysters

A press release from the Oregon Health Authority states that Coos Bay Oyster Company of Charleston, Oregon is recalling all of its shucked oysters because they may be contaminated with Campylobacter bacteria. There have been three confirmed reported cases of Campylobacter linked to the shellfish. The oysters were purchased from two markets in Lane and Coos counties and harvested from Coos Bay, Oregon. The company recalled product on January 30, 2014 and expanded the recall to include all of the raw shucked oysters. Coos Bay Oyster Company has stopped production and distribution of the product while an investigation is underway. The shellfish was sold in plastic tubs in 1/2 gallon, quart, pint, and half-pint sizes, with sell-by dates from January 15 to February 17, 2014. The oysters … [Read more...]

Largest Multi-State Food Poisoning Outbreaks of 2013: #5

A Vibrio outbreak associated with raw shellfish that sickened at least 104 people in 13 states was the fifth-largest outbreak of 2013. The outbreak, which began in May and lasted through September, hospitalized six people. Public health investigators interviewed 82 of the people who got sick and gathered their food histories. Seventy five of them, or 91 percent, reported eating raw oysters or raw clams in the week before illness began. The age range for those who became ill was 22 years to 85 years old with a median of 51 years old. About 62 percent of the patients were male. The states where illnesses were reported were: California, Nebraska, Minnesota, Texas, Ohio, Massachusetts, New York Virginia, Maryland, New Jersey, Connecticut, Rhode Island and Vermont. Shellfish harvest … [Read more...]

Outbreak: Vibrio From Raw Oysters, Clams Sickens 104 in 13 States

A Vibrio outbreak associated with eating raw oysters and raw clams has sickened at least 104 people in 13 states over the last six months, according to the Centers for Disease Control and Prevention (CDC). Six people have been hospitalized. Public health investigators have traced the source of some of these illnesses to shellfish harvest areas in Connecticut, Massachusetts, New York, and Virginia. Massachusetts issued a recall of oysters,  Connecticut issued a recall of oysters and clams. Implicated harvest areas in Virginia were closed in July and remain closed.  In Massachusetts, they were closed in August and remain closed. In New York they were closed in June and reopened in mid-September. In Connecticut, they were closed in August and reopened in mid-September. Reports of … [Read more...]

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