Diseases of Public Health Significance

Legionella

Legionella are a type of bacteria that are found in natural water sources which can also grow in human made water systems. These bacteria can cause Legionnaire’s disease and Pontiac fever, both of which present with flu-like symptoms, however Pontiac fever tends to be milder illness.

Yersiniosis

Yersiniosis (yer-sin-ee-o-sis) is an infection caused by the bacteria Yersinia. Yersinia is a strong bacteria that can continue to live in environments without much oxygen and in refrigeration.

Shigellosis

Shigellosis is an infectious disease caused by a group of bacteria called Shigella. People who eat food or drink water contaminated with Shigella bacteria can become ill with shigellosis.

Listeriosis

Listeria is a bacteria that can cause a rare but serious illness called listeriosis. Pregnant women, the elderly, and those with a weakened immune system have a higher risk of becoming seriously ill.​