Who does Legionella infect?
In the environment, Legionella parasitises free-living amoebae such as Naegleria and Hartmanella. It also infects macrophages and a number of other components of the human cell-mediated immune system. Scientists have also isolated L. pneumophila from calves who had died of pneumonia. In the second case, fatal pneumonia caused by L. pneumophila was determined as the cause of death.
