Legionella anisa infection: Legionella anisa is a type of bacteria which can cause infection in susceptible humans. Risk factors include diabetes, certain cancers, old age, immunosuppression, emphysema and smoking. Infection is rare and can occur at any age but the elderly or those with a weak immune system are more susceptible. These particular bacteria are commonly found in the environment (e.g. water and soil). Infection usually occurs through inhalation of the bacteria which results in a lung infection called pneumonia or may result in a flu-like illness. The bacteria may also cause respiratory system irritation, inflammation or sensitization. The nature and severity of symptoms may vary amongst patients. Some people may have the bacteria in their body but may have no symptoms. The incubation period lasts from 2 to 10 days but is usually 5 to 6 days. The infection cannot be transmitted from person to person.
