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Yersinia


Image: CDC

Yersinia spp. are gram-negative rods with rounded ends. Many of the members of the genus have the ability to grow under extremes of temperature and are well adapted to survive in the environment.

The main causes of disease in humans are Y. enterocolitica, which causes foodborne yersiniosis, and Y. pestis, the causative agent of plague.

Clinical Information

Incubation period:
3 to 7 days.

Common clinical features:
Watery diarrhoea, abdominal pain, fever, arthritis.

Reservoir:
Gastrointestinal tract of many species of wild and domestic animals and birds, usually asymptomatic.

Transmission:
Contaminated food and water (organisms can multiply in food at 4°C). Direct contact with infected animals. Person to person spread may occur. Particular association with raw pork and pork products.

Many cases in children present as abdominal pain that mimics appendicitis.


Image: CDC

Yersinia spp. are gram-negative rods with rounded ends. Many of the members of the genus have the ability to grow under extremes of temperature and are well adapted to survive in the environment.

The main causes of disease in humans are Y. enterocolitica, which causes foodborne yersiniosis, and Y. pestis, the causative agent of plague.

Clinical Information

Incubation period:
3 to 7 days.

Common clinical features:
Watery diarrhoea, abdominal pain, fever, arthritis.

Reservoir:
Gastrointestinal tract of many species of wild and domestic animals and birds, usually asymptomatic.

Transmission:
Contaminated food and water (organisms can multiply in food at 4°C). Direct contact with infected animals. Person to person spread may occur. Particular association with raw pork and pork products.

Many cases in children present as abdominal pain that mimics appendicitis.

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