Gram negative aerobe
L. pneumophila: associated with two distinct syndromes: pneumonia (legionnaires disease) and Pontiac Fever
Infection typically occurs via inhalation of aerosolized contaminated water or aspiration of contaminated water
Outbreaks often associated with cooling towers, hot tubs, medical equipment
Increased incidence with hot, humid, weather and thundershowers
Most commonly found in patients age > 50 years, smokers, immunocompromised.
However, likely underestimated in children
Outbreaks often associated with cooling towers, hot tubs, medical equipment
Increased incidence with hot, humid, weather and thundershowers
However, likely underestimated in children
Legionella
Gram-positive
Brucella
Streptococcus pneumoniae
Staphylococcus
Staphylococcus aureus
Acinetobacter
Gram-negative