What is meant by yersiniosis?

What is meant by yersiniosis?

Yersiniosis: An infectious disease caused by a bacterium called Yersinia enterocolitica (and, less often, other forms of Yersinia). The infection can cause a variety of symptoms depending on the age of the person infected.

What bacteria causes yersiniosis?

Yersiniosis is an infection caused most often by eating raw or undercooked pork contaminated with Yersinia enterocolitica bacteria. CDC estimates Y. enterocolitica causes almost 117,000 illnesses, 640 hospitalizations, and 35 deaths in the United States every year.

How do you get yersiniosis?


  1. Yersinia bacteria are spread by eating or drinking contaminated food or water or by contact with an infected person or animal.
  2. Infected people may experience mild or severe diarrhea, fever and abdominal cramps. Sometimes Yersinia infection may mimic appendicitis.
  3. Animals are the main source of Yersinia.

Who is most likely to get yersiniosis?

The symptoms of yersiniosis depend on the age of the person infected. Infection occurs most often in young children.

What is the incubation period of yersiniosis?

Incubation period is typically 4–6 days (range, 1–14 days). Symptoms include fever, abdominal pain (may mimic appendicitis), and diarrhea (may be bloody and can persist for several weeks).

Is yersiniosis a communicable disease?

Person-to-person spread is rare. An infected person is contagious for at least as long as the symptoms last. Some people with yersiniosis continue to be infectious for weeks or months, even after the diarrhea has ended.

What is the treatment of yersiniosis?

Yersiniosis usually goes away on its own without antibiotic treatment. However, antibiotics may be used to treat more severe or complicated infections.

What are the common food sources of Yersinia?

enterocolitica can be found in meats (pork, beef, lamb, etc.), oysters, fish, crabs, and raw milk. However, the prevalence of this organism in soil, water, and animals, such as beavers, pigs, and squirrels, offers many opportunities for Yersinia to enter the food supply.

How does yersiniosis spread in the body?

How is yersiniosis spread? Yersiniosis is usually associated with consumption of food or water contaminated with Yersinia bacteria, or by contact with a person or animal infected with Yersinia bacteria. Yersinia bacteria live in the intestines of infected persons/animals and are released with bowel movements.

How do you prevent yersiniosis?

Avoid eating raw or undercooked pork. Thoroughly cook raw meat and poultry to destroy the bacteria. Meat, poultry, pork, and hamburgers should be cooked until they are no longer pink in the middle. Defrost food in the refrigerator, in cold water, or in the microwave.

How do you control yersiniosis?

Can Yersiniosis Be Prevented?

  1. Don’t serve or eat raw or undercooked meat.
  2. Drink and serve only pasteurized milk and milk products.
  3. Wash hands with soap and water before eating and preparing food; before touching infants or their toys, bottles, or pacifiers; and after contact with animals or handling raw meat.

How many species of Yersinia are there?

In total, there are 11 species of Yersinia, three of which are important human pathogens associated with zoonotic infections – Y. pestis causes plague and Y. pseudotuberculosis and Y. enterocolitica give rise to yersiniosis.

How does Yersinia pestis get into the blood?

Yersinia Pestis Subsequently the blocked and hungry flea bites ferociuosly and the aspirated blood contaminated with Y. pestis from the flea, is regurgitated into the bite wound Inoculated organisms may be phagocytosed by polymorphonuclear cells and monocytes 12.

What are the characteristics of a Yersinia fermenter?

• Yersinia species are non-lactose fermenters • Motile with the exception of Y. pestis. • Are catalase positive, oxidase negative, Indole -ve, ONPG +ve, Urease +ve except Y. pestis • Aerobic/facultative anaerobic or Microaerophilic. • Most have animals as their natural hosts, but they can produce serious disease in humans.

What’s the best temperature for Yersinia to grow?

• Grow on ordinary media, however, growth is slower than other Enterobacteriaceae members • Wide temperature range (5-42 C) • Best growth temp. 25-30C • Yersinia has the ability to not only survive, but also to actively proliferate at temperatures as low as 1–4°C (e.g., on cut salads and other food products in a refrigerator). 4.

Is the yersinioses an animal or human infection?

• The yersinioses are zoonotic infections of domestic and wild animals; humans are considered incidental hosts that do not contribute to the natural disease cycle. 3.