As of 4 March 2018, with 967 people infected and 180 deaths, this was the largest listeriosis outbreak in history. The source was traced to processed meat products produced at a Tiger Brands Enterprise plant in Polokwane. 2018 Australia listeriosis outbreaks
On 2 March 2018 the New South Wales Food Authority confirmed that investigations into a listeriosis outbreak in rockmelons (cantaloupes) began in January. The cantaloupes had infected people from Victoria, Queensland, New South Wales and Tasmania, after being grown on a farm in the Riverina region of NSW.As of 2 March 2018, 13 of 15 cases had been confirmed as originating from listeria infected cantaloupes, and of the 15 people infected, 3 had died. Later victims included a fourth person on 7 March and a Victorian man in his 80s on 16 March. A miscarriage was also linked to listeriosis. Seventeen cases had been confirmed as of 7 March.In July 2018, a number of countries, including Australia, issued recalls of frozen vegetables due to Listeria. 2019 Spain listeriosis outbreak
In August 2019, an outbreak was declared in several provinces in Andalusia, southern Spain, as a result of consumption of a contaminated batch of processed-meat products. As of 19 August 2019, 80 people had been diagnosed and 56 were hospitalized (43 of them in the province of Seville),
As of 20 August, 114 people were diagnosed, and 18 pregnant woman in hospital, and the first confirmed death (a 90-year-old woman);

although the total figure of hospitalised reduced to 53. In addition, eight miscarriages have been related to the outbreak.
In either case, pain typically starts as a generalized abdominal pain (with involvement of poorly localizing visceral innervation of the visceral peritoneal layer), and may become localized later (with involvement of the somatic innervation of the parietal peritoneal layer). Peritonitis is an example of an acute abdomen. Other symptoms
Diffuse abdominal rigidity (abdominal guarding) is often present, especially in generalized peritonitis
Fever
Sinus tachycardia
Development of ileus paralyticus (i.e., intestinal paralysis), which also causes nausea, vomiting and bloating
Reduced or no passage of abdominal gas and bowel sound

Complications
Sequestration of fluid and electrolytes, as revealed by decreased central venous pressure, may cause electrolyte disturbances, as well as significant hypovolemia, possibly leading to shock and acute kidney failure. A peritoneal abscess may form (e.g., above or below the liver, or in the lesser omentum)
Sepsis may develop, so blood cultures should be obtained. Complicated peritonitis typically involves multiple organs. Causes
Infection
Perforation of part of the gastrointestinal tract is the most common cause of peritonitis. Examples include perforation of the distal esophagus (Boerhaave syndrome), of the stomach (peptic ulcer, gastric carcinoma), of the duodenum (peptic ulcer), of the remaining intestine (e.g., appendicitis, diverticulitis, Meckel diverticulum, inflammatory bowel disease (IBD), intestinal infarction, intestinal strangulation, colorectal carcinoma, meconium peritonitis), or of the gallbladder (cholecystitis). Other possible reasons for perforation include abdominal trauma, ingestion of a sharp foreign body (such as a fish bone, toothpick or glass shard), perforation by an endoscope or catheter, and anastomotic leakage.