Around 140 people have tested positive for coronavirus at a meat processing factory in Norfolk.
Norfolk County Council said there had been a "significant outbreak" of Covid-19 at the Cranswick Country Foods site in Watton.
So far around 300 employees of the plant have been tested, the remaining employees are to be wiped off today.
The outbreak comes when 75 workers at a Bernard Matthews turkey factory in Great Witchingham, Norfolk, also tested positive for coronavirus earlier this month.
There was a "significant outbreak" of Covid-19 at the Cranswick Country Foods site in Watton (picture)
This map shows the number of positive Covid-19 cases in the Watton area in the seven days leading up to October 21 – the latest data prior to the outbreak
Last week, a cookie factory that makes Jammy Dodgers and Wagon Wheels was hit by a Covid-19 outbreak. Four employees tested positive for the virus.
Burton's Biscuits in Edinburgh said four workers should go home and self-isolate after receiving positive test results on October 23.
A company spokeswoman added that social distancing measures are in place and production will continue at the bakery.
The Council's Public Health Director, Dr. Louise Smith said the local agency is working with the Joint Biosecurity Center to urge people in the Watton area to get tested if they have symptoms.
In a statement, she said, “Tests by employees at Cranswick Foods have shown a significant outbreak.
& # 39; At this point we have identified about 140 positive cases out of about 300 cases tested so far. The analysis of the swabs will continue and the remaining employees on site will be tested today and tomorrow.
"Due to the high proportion of positive case results that have been received so far, we are working with the Joint Biosecurity Center and have stepped up contact tracing and brochures in the Watton area to encourage people with symptoms to have access to tests."
Comment was requested from Cranswick Country Foods.
As of October 15, there had been 72 positive cases at Bernard Matthews' food processing facility in Holton, near Halesworth
About 75 workers also tested positive at a Bernard Matthews turkey factory in Great Witchingham, Norfolk
Cooled and Humid Interiors with Ultraviolet Light: Why Meat Plants Are a Breeding Ground for Coronavirus Outbreaks
The virus thrives in cold, damp, and indoor spaces, especially on cool surfaces.
The lack of breeze or ultraviolet light from the sun means the moisture remains and cannot be killed in food processing plants.
Additionally, social distancing is especially difficult in workplaces with a busy production line, which means the virus is likely to spread more easily.
Loud machines also force people to raise their voices, and researchers say situations where people have to scream increase the risk of spreading the virus to others.
It's not just the UK that has seen a trend after hundreds tested positive at a Berlin slaughterhouse, while a damp market in Wuhan was believed to be at the heart of a multitude of infections at the start of the crisis.
The local authority said testing began at Bernard Matthews' turkey factory on October 15 with more than 600 employees tested.
"Results showed that the majority of positive cases so far occurred on the afternoon shift on site, leading public health to advise Bernard Matthews to instruct the entire shift to self-isolate," said Norfolk County Council.
As of October 15, there were 72 positive cases at Bernard Matthews' food processing facility in Holton near Halesworth, Suffolk County Council said.
In Suffolk, as part of his response to the Covid-19 outbreak, Bernard Matthews picked up bus marshals on his free passenger transportation.
Food production at the processing facility was not affected by the Covid outbreak.
The website has had controls to reduce coronavirus infections since March, including regular temperature checks, bladder workers, Covid marshals, masks and visors, and social distancing.
The majority of the 18 workers who tested positive live in the Great Yarmouth and Lowestoft areas and the cases are believed to have been caught in the community.
Suffolk County Council officials, Public Health England and Bernard Matthews are working together to manage the situation.
Earlier this month, ten cases were linked to a factory in Scunthorpe where workers claimed they shouldn't wear masks because they are food hazardous.
The pork processing plant of the Karro Food Group, one of the largest food producers in the country, has been criticized by employees for its coronavirus measures.
Workers reported a number of cases over the past week, despite the company claiming they were infected through "community contacts". It also insisted that it obey all government guidelines.
An employee at the factory, who wanted to remain anonymous, said, “The employees fall like flies and are sent home. There are now about ten confirmed cases. & # 39;
Food factories ravaged by Covid outbreaks
- October 26: Cranswick Country Foods location in Watton, Norfolk
- October 23: Burton's biscuit factory in Edinburgh
- October 22: Bernard Matthews turkey plant, Great Witchingham, Norfolk
- October 6: Karro Food Group's pork processing plant in Scunthorpe
- September 30th: Pilgrim & # 39; s Pride Food Factory in Pool at Redruth, Cornwall
- September 29: Bernard Matthews turkey factory, Holton, near Halesworth in Suffolk
- September 23: Gregg's factory in Newcastle
- September 11th: Aunt Bessie's Yorkshire pudding factory in Hull
- September 2nd: Millers of Speyside in the Scottish Highlands
- Aug 26: Food Standard agency announces there are at least 40 active outbreaks in factories in the UK
- August 22nd: Banham Poultry in Attleborough, Norfolk
- August 21: Greencore in Northampton
- August 20: Cranswick in Ballymena, Northern Ireland
- August 18: Bakkavor in Newark
- August 17th: 2 Sisters Food Group in Coupar Angus, Tayside
- August 17th: Fyffes in Coventry, West Midlands
- August 13th: Greencore in Northampton
- July 12th: AS Green and Co, Herefordshire
- July 3: Walker, Leicester
- June 26th: Tulip, Tipton
- June 24th: Kepak Food Group in Merthyr Tydfil, Wales
- June 23: Prince, Wisebech
- June 19th: Asda, Cleckheaton, West Yorkshire
- June 19th: Rowan Foods in Wrexham, Wales
- June 17th: 2 Sisters Food Factory in Anglesey, North Wales
- May 15: Cranswick, Barnsley
- May 11th: Moy Park in Dungannon, Northern Ireland
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